PERRY JOHNSON LABORATORY

ACCREDITATION, INC.

Certificate of Accreditation
Perry Johnson Laboratory Accreditation, Inc. has assessed the Laboratory of:

Grafeno Calibraciones S. de R.L. de C.V.

Blvd. Reynosa No. 1211, Colonia Rodolfo Garza Cantu
Reynosa, Tamaulipas, México. CP. 88797

(Hereinafter called the Organization) and hereby declares that Organization is accredited
in accordance with the recognized International Standard:

ISO/IEC 17025:2017

This accreditation demonstrates technical competence for a defined scope and the
operation of a laboratory quality management system
(as outlined by the joint ISO-ILAC-IAF Communiqué dated April 2017):

Dimensional, Mass, Force and Weighing Devices, Mechanical, Optical, Acoustic

Time and Frequency, Thermodynamic, Electrical and Chemical Calibration
(As detailed in the supplement)

Accreditation claims for such testing and/or calibration services shall only be made from addresses referenced within this
certificate. This Accreditation is granted subject to the system rules governing the Accreditation referred to above, and the
Organization hereby covenants with the Accreditation body’s duty to observe and comply with the said rules.

For PJLA:

Initial Accreditation Date: Issue Date: Expiration Date:

January 28, 2020 March 30, 2022 April 30, 2024

Accreditation No.: Certificate No.:

Tracy Szerszen
President 105129 L22-239

Perry Johnson Laboratory The validity of this certificate is maintained through ongoing assessments based on a
Accreditation, Inc. (PJLA) continuous accreditation cycle. The validity of this certificate should be
755 W. Big Beaver, Suite 1325 confirmed through the PJLA website: www.pjlabs.com
Troy, Michigan 48084
Page 1 of 20
 Certificate of Accreditation: Supplement
Grafeno Calibraciones S. de R.L. de C.V.
Blvd. Reynosa No. 1211, Colonia Rodolfo Garza Cantu
Reynosa, Tamaulipas, México. C.P 88797
Contact Name: Marco Romay Phone: 899-230-2160

Accreditation is granted to the facility to perform the following calibrations:

Dimensional
CALIBRATION AND CALIBRATION
RANGE OR NOMINAL
MEASURED INSTRUMENT, MEASUREMENT EQUIPMENT
DEVICE SIZE AS
QUANTITY OR GAUGE CAPABILITY EXPRESSED AND REFERENCE
APPROPRIATE
AS AN UNCERTAINTY (±) STANDARDS USED
CalipersFO 1 in to 40 in (52 + 0.44L) µin Gage Block Grade 0, Grade 1
Ring Gages and Pins ASME
B89.1.14, BS EN ISO 13385
Inside MicrometersFO 0.4 in to 40 in (42 + 0.44L) µin Gage Block Grade 0, Grade 1
ASME B89.1.13
Outside MicrometersFO 0.01 in to 1 in (7.2 + 2.4L) µin Gage Block Grade 0, Grade 1
0.04 in to 4 in (6.2 + 3.4L) µin ASME B89 .1.13
ISO 3611
4 in to 40 in (14.2 + 0.57L) µin
FO Cylindrical measuring pins
Depth Micrometers 0.1 in to 40 in (19 + 72L) µin
Grade X
DIN-863 Part 3, JIS B 7544
V-Anvil Micrometer 0.05 in to 4 in (19 + 72L) µin Cylindrical measuring pins
Grade X,
DIN 863 Part 3
Height Gages/Master 0.1 in to 36 in (33 + 0.45L) µin Height Micrometer
Heigh GagesFO (0.01 to 915) mm Gage Block Grade 1 JIS B 7517,
ISO 13225, DGQ 2618 16.1
Dial and Digital 0.001 in to 2 in (30 + 1.9L) µin Gage Block Grade 1(in)
IndicatorsFO (0.01 mm to 50 mm) [(0.762 + 0.05L) µm] Gage Block Grade 0 (mm)
JIS B 7517 / API 7-2
D 3767, ISO 13102
Plug GaugesFO 0.01 in to 2 in (13.9 + 0.43D) µin Super-Micrometer Comparator
(0.1 mm to 50.8 mm) (0.35 + 4 x 10-4D) µm ASM B89.1.5
Ring GaugesFO 0.01 in to 2 in (13.8 + 0.46D) µin Super-Micrometer Comparator
(0.1 mm to 50.8 mm) (0.35 + 4 x 10-4D) µm ASM B89.1.6
Step BlockFO 0.1 in to 1 in (35 + 1L) µin Gage Block Grade 1
(0.1 mm to 20 mm) (0.899 + 0.23L) µm Gage Block Grade 0 (mm)
Micrometer
ASTM E797/797M-10
Dial and Bore Gages,FO 0.4 in to 4 in (29.7 + 0.44D) µin Super Micrometer, Standards
Ring Gages
JIS B 75 15
Length Standards (Bars, 1 in to 24 in (44 + 0.45L) µin Super Micrometer, Height Gage,
Rods, Micrometers Setting ASME B89 .1.13
Standards and Fixtures
Used as Length
Standards)FO

Issue: 03/2022 This supplement is in conjunction with certificate #L22-239 Page 2 of 20

 Certificate of Accreditation: Supplement
Grafeno Calibraciones S. de R.L. de C.V.
Blvd. Reynosa No. 1211, Colonia Rodolfo Garza Cantu
Reynosa, Tamaulipas, México. CP. 88797
Contact Name: Marco Romay Phone: 899-230-2160

Accreditation is granted to the facility to perform the following calibrations:

Dimensional
MEASURED INSTRUMENT, RANGE OR NOMINAL DEVICE CALIBRATION AND CALIBRATION
QUANTITY OR GAUGE SIZE AS APPROPRIATE MEASUREMENT EQUIPMENT
CAPABILITY EXPRESSED AND REFERENCE
AS AN UNCERTAINTY (±) STANDARDS USED
External / Internal 1 in to 24 in (15 + 2.2 x 10-2L) µin Gage Block Grade 1, Gage
Taper GagesFO Block Grade 0
API SPEC STD 5B & API
SPEC 7-2
Ultrasonic Thickness Flaw 22.4 mm to 100 mm 80 µm IIW Gage Block
DetectorFO ASTM-E317
AWS-D1.1/D1.1M
Laser MicrometerFO 0.01 001 in 4.2 µin Laser-Mike 102-CF, 103 CF
0.5 in 6.3 µin (Calibration Fixture)
MDI-01
0.75 002 in 9.2 µin
1.5 in 12 µin
Coating ThicknessFO 6 µm to 1 500 µm 1 µm DFT Standards
ASTM D 7091
1 500 µm to 4 000 µm 2 µm Foil Thickness Standards
ASTM D 7091, D69988
Thread Measuring WiresFO 0.004 in to 1 in (13.9 + 0.43D) µin Micrometer ASME
B89.1.17, ASME B1.2,
ISO 16239 DGQ 2618 4.2
Thread Plug Gage M 1.6 x 0.35 to M 100 x 6 (0.7 + 2.4 x 10-3D) µm Super-Micrometer
Major DiameterFO 0-80 to 4-10 (26 + 2.5D) µm Comparator
Thread Measuring Wires
Thread Ring Gage M 1.6 x 0.35 to M 100 x 6 (0.7 + 2.4 x 10-3D) µm Euramet cg-10
Minor DiameterFO 0-80 to 4-10 (26 + 2.5 D) µm ASME B1.5
Thread Plug Gage M 1.6 x 0.35 to M 100 x 6 (2.3 + 2 x 10 ⁻³D) µm Super-Micrometer
Pitch Diameter 0-80 to 4-10 (87 + 2 D) Comparator
Thread Measuring Wires
Thread Ring Gage M 1.6 x 0.35 to M 100 x 6 ((2.3 + 2 x 10 ⁻³D) µm EURAMET cg-10
Pitch Diameter 0-80 to 4-10 (87 + 2 D) ASME B1.5

API Rotary Shouldered 0.1 in to 1 in 65 µin Master Thread Gage,

Gage StandOff FO Surface Plate
Height Gage
API SPEC 7-2
CrossheadFO 4 mm/min to 393.7 mm/min 1.3 mm/min Digital Stopwatch Linear
(Universal Machine) (0.157 5 in/min to (4.9 x 10-2 in/min) Scale
15.5 in/min) ASTM E 74

Issue: 03/2022 This supplement is in conjunction with certificate #L22-239 Page 3 of 20

 Certificate of Accreditation: Supplement
Grafeno Calibraciones S. de R.L. de C.V.
Blvd. Reynosa No. 1211, Colonia Rodolfo Garza Cantu
Reynosa, Tamaulipas, México. CP. 88797
Contact Name: Marco Romay Phone: 899-230-2160

Accreditation is granted to the facility to perform the following calibrations:

Dimensional
MEASURED INSTRUMENT, RANGE OR NOMINAL DEVICE CALIBRATION AND CALIBRATION
QUANTITY OR GAUGE SIZE AS APPROPRIATE MEASUREMENT EQUIPMENT
CAPABILITY EXPRESSED AND REFERENCE
AS AN UNCERTAINTY (±) STANDARDS USED
Optical Comparator 0.001 in to 12 in (98 + 0.6L) μin Comparison to Stage
X axis Linearity Micrometer Scale
Y axis LinearityFO Angles Blocks
Optical Comparator 0° to 90° 3.5° JIS B 7184
AngularityFO
Microscope 0.001 in to 12 in 98 + 0.6L) μin Comparison to Stage
X axis Linearity Micrometer Scale
Y axis LinearityFO Angles Blocks
JIS B 7153
Lead Gauge / Setting 0 in to 18 in (47 + 4.6L) µin Microscope, Block Gages
StandardsFO API SPEC STD 5B &
API SPEC 7-2
Bevel Protractors 1° to 180° 0.06° Angle Blocks, Gage
Clinometers, Bubble Blocks, JIS B 7510
LevelsFO BS-1685
Gauge Contact Points 0.021 in to 0.072 in (10 + 0.2L) µin Super-Micrometer
DiameterFO API SPEC STD 5B & API
SPEC 7-2
Radius GagesFO Up to 1 in 200 μin Microscope
NA 17-20MD-43
Feeler GagesFO 0.1 in to 1 in (760 + 10L) μin Bench Micrometer;
JIS B 7524
RulesFO 1 in to 24 in (57 + 6L) μin Rule standard Microscope
24 in to 72 in (150 + 9L) μin NIST SOP-10
Vision System 6 in x 3 in 95 μin Mitutoyo 172-119
Non-Linear AccuracyFO 6 in x 8 in 95 μin Mitutoyo 172-116
Standard Glass Scale
6 in x 10 in 115 μin JIS B 7153
CMM Performance 25.4 mm to 1 000 mm (4.5 + 0.04 L) μm Gage Blocks Long,
X Axis, Y Axis, Z axisO (1 in to 40 in) (1.2 + 2.2 L) μin Micrometer, Ball
CMM RepeatabilityO 19.05 mm 0.025 μm Granite Squares
ISO 10360-2

Mass, Force and Weighing Devices

MEASURED INSTRUMENT, RANGE OR NOMINAL DEVICE CALIBRATION AND CALIBRATION
QUANTITY OR GAUGE SIZE AS APPROPRIATE MEASUREMENT EQUIPMENT
CAPABILITY EXPRESSED AND REFERENCE
AS AN UNCERTAINTY (±) STANDARDS USED
BalancesO 1 mg to 200 g (4.1 x 10-4 + 2. x 10-6Wt) g Class F2 Weights
1 g to 500 g (4.1 x 10-4 + 2 x 10-6Wt) g OIML-R 761

Issue: 03/2022 This supplement is in conjunction with certificate #L22-239 Page 4 of 20

 Certificate of Accreditation: Supplement
Grafeno Calibraciones S. de R.L. de C.V.
Blvd. Reynosa No. 1211, Colonia Rodolfo Garza Cantu
Reynosa, Tamaulipas, México. CP. 88797
Contact Name: Marco Romay Phone: 899-230-2160

Accreditation is granted to the facility to perform the following calibrations:

Mass, Force and Weighing Devices

MEASURED INSTRUMENT, RANGE OR NOMINAL DEVICE CALIBRATION AND CALIBRATION
QUANTITY OR GAUGE SIZE AS APPROPRIATE MEASUREMENT EQUIPMENT
CAPABILITY EXPRESSED AND REFERENCE
AS AN UNCERTAINTY (±) STANDARDS USED
Scale and BalancesO 200 g to 3 kg (1.15 + 4.85 x 10-5Wt) g Class M1 Weights
2 kg to 60 kg (1.7 + 8 x 10-7Wt) g OIML-R 761
0.5 lb to 300 lb (3 x 10-3 + 1.8 x 10-6Wt) lb Class 6 Weights
OIML-R 761
Force Gage CompressionFO 0.45 kg to 136.6 kg 0.2 % of reading Class 6 Weights
(Dynamometer) (1 lb to 300 lb) Force gage
Force Gage - TensionFO 0.45 kg to 136.6 kg 0.2 % of reading ASTM E 74
(Dynamometer) (1 lb to 300 lb)
Tensile Testers 444.8 N to 2 224.1 N 9.4 N Load Cell
(Dynamometer, Load Cell (100 lbf to 500 lbf) (0.25 % of reading) Dyly 103-3k lbs
Compression-Tension) FO 444.8 N to 4 448 N 5.7 N Dyly-103-10k lbs
(100 lbf to 1 000 lbf) (0.13 % of reading) ASTM E74-02
4 448 N to 44 482.2 N 20 N BS 8422
(1 000 lbf to 10 000 lbf) (0.045 % of reading) OILM R 65
Mass Weight Class 10 mg 0.049 mg Weights Set Class F2
M1, M2, M3 20 mg 0.074 mg OLMI R111-1
50 mg 0.084 mg
100 mg 0.093 mg
200 mg 0.11 mg
500 mg 0.14 mg
1g 0.17 mg
2g 0.21 mg
5g 0.27mg
10 g 0.32 mg
20 g 0.42 mg
50 g 0.54 mg
100 g 0.83 mg
5 kg 0.14 g
10 kg 0.27 g
Mass Weight Class 1 lb 0.064 g Weights Set Class 6
M1, M2, M3FO 2 lb 0.087 g OLMI R111-1
5 lb 0.098 g
10 lb 0.11 g
50 lb 0.37 g
Hydrometer 0.5 g/cm3 to 1.6 g/cm3 0.000 12 g/cm3 Sentra Balance
(Res.= 0.000 2 g/cm3) CENAM Technical
Guide
Issue: 03/2022 This supplement is in conjunction with certificate #L22-239 Page 5 of 20
 Certificate of Accreditation: Supplement
Grafeno Calibraciones S. de R.L. de C.V.
Blvd. Reynosa No. 1211, Colonia Rodolfo Garza Cantu
Reynosa, Tamaulipas, México. CP. 88797
Contact Name: Marco Romay Phone: 899-230-2160

Accreditation is granted to the facility to perform the following calibrations:

Mechanical
MEASURED INSTRUMENT, RANGE OR NOMINAL DEVICE CALIBRATION AND CALIBRATION
QUANTITY OR GAUGE SIZE AS APPROPRIATE MEASUREMENT EQUIPMENT
CAPABILITY EXPRESSED AND REFERENCE
AS AN UNCERTAINTY (±) STANDARDS USED
Torque ToolsFO 1.1 N•m to 11.298 N•m (0.18 + 13 x 10-4T) N•m Torque Tester HP -100
(1 lbf•in to 100 lbf•in) (2 + 11 x 10-3T) lbf•in Transducer WRG4-210:
1.129 8 N•m to 62.148 N•m (0.18 + 13 x 10-4T) N•m 10 N∙m to 200 N∙m
(100 lbf•in to 550 lbf•in) (2 + 11 x 10-3T) lbf•in BS 7882
ASME B107.300
81.35 N•m to 813.5 N•m (2.2 + 13.1 x 10-3T) N•m Digital Torque Tester
(60 lbf•ft to 600 lbf•ft) (1.6 + 2.3 x 10-3T) lbf•ft 6004-F-DTT,
WRG4-210 BS 7882
ASME B107.300
Torque Analyzer and 1 lbf•in to 240 lbf•in 4 x 10-3 lbf•in + 0.13 % of rdg Torque Arm 8 in and 2 ft w/
TransducerFO 20lbf-ft to 600 lbf-ft 1.5x10-3 lbf•ft + 0.04 % of rdg Weights Class F1
ASTM E2624
Pressure Manometer - 100 psi to 1 000 psi (0.14 % of rdg + 0.5 psi) Dead Weight Tester –
DirectFO 1 001 psi to 10 000 psi (0.23 % of rdg+ 1.3 psi) DWT1305 Piston area:
Low: 0.062 5 in High:
0.125. ASME B40.100
Pressure Tranducers 25 psi to 1 000 psi 0.17 % of reading Dead Weight Tester DAQ
DirectFO 1 025 psi to 10 000 0.18 % of reading 34970A DC Power Supply,
DAQ 34970A
DKD- R 6-1,
OIML-R 101
ASME B40.100
Pressure Manometer- 300 psi to 3 000 psi 1.2 psi Beta Gauge PI-PRO-3K
ComparationFO Fluke 725 Fluke700P03, 07
OIML-R 101 DKD-R 6-1
ASME B40.100
Vacuum GageFO -0.3 inHg to -30 inHg (0.37 + 65 x 10-4P) inHg OMEGA DPG-4000-500 /
500 psi 35 BAR OIML-R
101 ASME B40.100
Hardness Tester 500 HLD to 800 HLD 16 HLD Hardness Block
(Leeb scale )FO ASTM A 956-06
Rockwell hardness 40 HRB to 59 HRB 0.49 HRB Hardness Test Block
Testers Indirect 60 HRB to 79 HRB 0.49 HRB ASTM E18-20
Verification HRBFO
80 HRB to 100 HRB 0.49 HRB
Rockwell Hardness 20 HRC to 30 HRC 0.42 HRC
Testers Indirect 35 HRC to 55 HRC 0.54 HRC
Verification HRCFO
59 HRC to 65 HRC 0.37 HRC

Issue: 03/2022 This supplement is in conjunction with certificate #L22-239 Page 6 of 20

 Certificate of Accreditation: Supplement
Grafeno Calibraciones S. de R.L. de C.V.
Blvd. Reynosa No. 1211, Colonia Rodolfo Garza Cantu
Reynosa, Tamaulipas, México. CP. 88797
Contact Name: Marco Romay Phone: 899-230-2160

Accreditation is granted to the facility to perform the following calibrations:

Mechanical
MEASURED INSTRUMENT, RANGE OR NOMINAL CALIBRATION AND CALIBRATION
QUANTITY OR GAUGE DEVICE SIZE AS MEASUREMENT EQUIPMENT
APPROPRIATE CAPABILITY EXPRESSED AND REFERENCE
AS AN UNCERTAINTY (±) STANDARDS USED
Direct Verification of
Durometer Hardness Tester
Types: A, B, C, D, E, O &
ASTM D2240
DOF
ISO 21509
Extension at Zero reading
Test stand -Microscope
Indentor Shape (Not all
1.23 mm to 5.04 mm Balance, Load Cell
parameters apply to all of
Durometer Types) 15 μm
Indentor Diameter 15 μm
Indentor Tip Diameter 15 μm
Indentor Tip Radius 15 μm
Indentor Tip Angle 0.4°
Verification of the ASTM D-2240
Shore Durometer Test stand, Weights
Type A, B, E & OF 0.55 N to 8.05 N 0.24 N Class M3 OILM
Balance Sentra EZ6
Verification of the (Res.= 0.05 g )
Shore Durometer
Type C, D & DOF 4.445 N to 44.45 N 0.39 N

Time and Frequency

MEASURED INSTRUMENT, RANGE OR NOMINAL CALIBRATION AND CALIBRATION
QUANTITY OR GAUGE DEVICE SIZE AS MEASUREMENT EQUIPMENT
APPROPRIATE CAPABILITY EXPRESSED AND REFERENCE
AS AN UNCERTAINTY (±) STANDARDS USED
Stopwatch / TimerFO 20 s to 86 400 s 0.037 s Agilent 53131A Universal
Counter SP NIST 960-12
Res 1/100
Vector RF Generator, 100 µHz to 230 MHz 0.012 % of reading Universal Counter 53131A
Network Analyzer, DKD 2622-5,-14.1.
Spectrum Analyzer, 150 kHz to 3 Ghz 0.92 × 10-7 Spectrum Analyzer R3131,
Function Generators,FO HP8594E
DKD 2622-5-14.1.
0.1 Hz to 4.4 GHz 0.92 × 10-7 Spectrum Analyzer SA44B
DKD 2622-5-14.1.

Thermodynamic
CALIBRATION AND CALIBRATION
MEASURED INSTRUMENT, RANGE OR NOMINAL DEVICE MEASUREMENT EQUIPMENT
QUANTITY OR GAUGE SIZE AS APPROPRIATE CAPABILITY EXPRESSED AND REFERENCE
AS AN UNCERTAINTY (±) STANDARDS USED
OvensFO 100 °C to 1 200 °C 0.042 °C Agilent 34970A, Data
Acquisition Thermocouple
Type K, J. ASTM 145

Issue: 03/2022 This supplement is in conjunction with certificate #L22-239 Page 7 of 20

 Certificate of Accreditation: Supplement
Grafeno Calibraciones S. de R.L. de C.V.
Blvd. Reynosa No. 1211, Colonia Rodolfo Garza Cantu
Reynosa, Tamaulipas, México. CP. 88797
Contact Name: Marco Romay Phone: 899-230-2160

Accreditation is granted to the facility to perform the following calibrations:

Thermodynamic
CALIBRATION AND CALIBRATION
MEASURED INSTRUMENT, RANGE OR NOMINAL DEVICE MEASUREMENT EQUIPMENT
QUANTITY OR GAUGE SIZE AS APPROPRIATE CAPABILITY EXPRESSED AND REFERENCE
AS AN UNCERTAINTY (±) STANDARDS USED
Temperature Indicator 0 °C 0.04 ºC DAQ 34970A
(Reference Cold Junction RTD PT100 & Ice Bath
Compensation) Simulation of
@ Ambient Temperature RTD Output M631
Source and Measurement Euramet cg-11
Block Calibrator 0 °C to 600 °C 0.33 °C Omega CL3515R
Thermometer BimetallicFO DAQ Agilent 34970A
Thermocouple Type K, JFO 0 °C to 300 °C 0.73 °C RTD Pt 100, Euramet-cg-8
Thermometer Liquid in 0 °C to 300 °C 0.95 °C RTD PT 100 Liquid Bath
GlassFO CEM-TH-004e
Thermistors RTDFO -80 °C to 150°C 0.001 °C Keithley 2000
150.1 °C to 850 °C 0.015 °C Calibrator RTD M631
BS EN 60751
Digital Infrared 30 ºC to 50 °C 0.09 ºC Black Body Source
ThermometerFO 50 ºC to 500 ºC 1.2 ºC ASTM E 1965
Environmental Chambers -40 °C to 120 °C 0.36 °C DAQ 34970A RTD Pt 100
Temperature / HumidityFO 10 % RH to 90 % RH 0.8 % RH Humidity Sensor SD700,
Psychrometric Chart Source
Hygro-thermometer/ Chart 20 % RH to 95 % RH 1.3 % RH Temperature /Humidity
RecorderFO -40 °C to 100 °C 0.36 °C Euramet cg-20, DKD-R-57
IEC 60068-1,3-5,3-6
Data Logger Ambiental 10 ºC to 50 ºC 0.36 °C DAQ 34970A, RTD, PT 100
Temperature & HumidityFO (20 % RH to 80 % RH) (1.5 % RH) Temperature Sensor Extech
SD700 Psychrometric Chart
Euramet cg-20 v02
Thermo-Balance -40 °C to 120 °C 0.02 % of reading Omega CL3515R
MoistureFO ASTM D6980
BarometerFO 50 kPa to 120 kPa 0.12 % of reading Barometric Pressure Sensor
Extech SD700 OILM R 97
AnemometerFO 0.3 m/s to 1.6 m/s 1 % of reading Hot Wire Anemometer
BS 17713

Acoustic
MEASURED INSTRUMENT, RANGE OR NOMINAL DEVICE CALIBRATION AND CALIBRATION
QUANTITY OR GAUGE SIZE AS APPROPRIATE MEASUREMENT EQUIPMENT
CAPABILITY EXPRESSED AND REFERENCE
AS AN UNCERTAINTY (±) STANDARDS USED
Sound Level MeterFO 94 db to 11 4 db 0.32 db Acoustic Calibrator 407766
Extech
IEC 61672-2

Issue: 03/2022 This supplement is in conjunction with certificate #L22-239 Page 8 of 20

 Certificate of Accreditation: Supplement
Grafeno Calibraciones S. de R.L. de C.V.
Blvd. Reynosa No. 1211, Colonia Rodolfo Garza Cantu
Reynosa, Tamaulipas, México. CP. 88797
Contact Name: Marco Romay Phone: 899-230-2160

Accreditation is granted to the facility to perform the following calibrations:

Optical
CALIBRATION AND
CALIBRATION
MEASURED MEASUREMENT
RANGE OR NOMINAL DEVICE SIZE AS EQUIPMENT
INSTRUMENT, CAPABILITY
APPROPRIATE AND REFERENCE
QUANTITY OR GAUGE EXPRESSED
STANDARDS USED
AS AN UNCERTAINTY (±)
Light MeterO 2 000 lux 2.5 % of reading Light Meter Tenma
20 000 lux 3 % of reading 72-6693 Comparison
NIST250-95
100 000 lux 3.6 % of reading ASTM E 824
UV-A Radiometer 0.1 μW/cm2 to 100 μW/cm2 3.4 % of reading UV Radiometer Lutron YK-
Spectral: 10 μW/cm2 to 100 mW/cm2 3.7 % of reading 35UV Comparison
320 nm to 400 nmO ASTM G 130
UV-A LampO 0.1 mW/cm2 to 100 mW/cm2 2.6 % of reading ASTM E3022
ASTM G 138

Electrical
MEASURED INSTRUMENT, RANGE OR NOMINAL DEVICE CALIBRATION AND MEASUREMENT CALIBRATION
QUANTITY OR GAUGE SIZE AS APPROPRIATE CAPABILITY EXPRESSED EQUIPMENT
AS AN UNCERTAINTY (±) AND REFERENCE
STANDARDS USED
Equipment to Output 1 mV to 100 mV 0.006 % of reading + 0.005 7 mV DMM Keithley 2000
DC VoltageFO 100 mV to 1 V 0.003 6 % of reading + 0.002 mV 6 ½ Digits
OILM-R46-1-2 E 12
1V to 10 V 0.003 5 % of reading + 0.000 08 V DKD
10 V to 100 V 0.005 4 % of reading + 0.000 9 V
100 V to 1 000 V 0.022 % of reading + 0.009 V
0.1 mV to 100 mV 0.006 % of reading + 0.0057 mV DMM HP 34401A
100.1 mV to 1 V 0.003 6 % of reading + 0.002 mV OILM-R46-1-2 E 12
1.001 V to 10 V 0.003 5 % of reading + 0.000 08 V
10.001 V to 100 V 0.005 4 % of reading + 0.000 9 V
100.001 V to 300 V 0.022 % of reading + 0.009 V
300 mV to 100 V 0.5 % of reading Audio Analyzer at
1 MΩ
DKD 2622 Part 4
30 V to 600 V 0.011 V Power Analyzer Magtrol
1 V to 1 000 V 0.5 % of reading + 5 digits 6530
DKD 2622 Part 4

Issue: 03/2022 This supplement is in conjunction with certificate #L22-239 Page 9 of 20

 Certificate of Accreditation: Supplement
Grafeno Calibraciones S. de R.L. de C.V.
Blvd. Reynosa No. 1211, Colonia Rodolfo Garza Cantu
Reynosa, Tamaulipas, México. CP. 88797
Contact Name: Marco Romay Phone: 899-230-2160

Accreditation is granted to the facility to perform the following calibrations:

Electrical
MEASURED INSTRUMENT, RANGE OR NOMINAL CALIBRATION AND CALIBRATION
QUANTITY OR GAUGE DEVICE SIZE AS MEASUREMENT EQUIPMENT
APPROPRIATE CAPABILITY EXPRESSED AND REFERENCE
AS AN UNCERTAINTY (±) STANDARDS USED
Equipment to Output DMM Keithley 2000
AC Power Supply Load Regulation 6 ½ Digits
At the listed frequenciesFO Hantek 6022B
40 Hz to 100 Hz 10 V to 100 V 0.36 % of reading Oscilloscope 20 MHz
100 Hz to 20 kHz 10 V to 100 V 0.32 % of reading Agilent 53131A Universal
Counter
20 kHz to 30 kHz 10 V to 100 V 0.56 % of reading Power Analyzer 380801
Equipment to Output Ohmite Resistor Shunt
AC Power Supply Load Regulation Electronic Load
At the listed frequenciesFO KL-283
40 Hz to 100 Hz 100 V to 700 V 0.52 % of reading OILM-R46-1-2 E 12
100 Hz to 20 kHz 100 V to 700 V 0.32 % of reading CEM EL -023
20 kHz to 30 kHz 100 V to 700 V 0.48 % of reading
Equipment to Output
AC Power Supply Line Regulation
At the listed frequenciesFO
40 Hz to 100 Hz 1 V to 10 V 0.36 % of reading
100 Hz to 20 kHz 1 V to 10 V 0.32 % of reading
20 kHz to 30 kHz 1 V to 10 V 0.56 % of reading
Equipment to Output
AC Power Supply Line Regulation
At the listed frequenciesFO
40 Hz to 100 Hz 10 V to 100 V 0.36 % of reading
100 Hz to 20 kHz 10 V to 100 V 0.32 % of reading
20 kHz to 30 kHz 10 V to 100 V 0.56 % of reading
Equipment to Output
AC Power Supply Line Regulation
At the listed frequencies
40 Hz to 100 Hz 100 V to 300 V 0.52% of reading
100 Hz to 20 kHz 100 V to 300 V 0.32 % of reading
20 kHz to 30 kHz 100 V to 300 V 0.48 % of reading
Equipment to Output 0.1 kV to 10 kV 0.15 % of reading + 0.000 9 kV DDM Fluke 114
Withstanding DC 80 K-40 HV
Voltage Tester Probe 40 KV
(HiPot Tester)FO OILM-R46-1-2 E 12
Equipment to Output 0.1 kV to 10 kV 0.2 % of reading + 0.004 kV CEM EL -004
Withstanding AC
Voltage Tester
(HiPot Tester)FO
(45 Hz to 1 kHz)
Issue: 03/2022 This supplement is in conjunction with certificate #L22-239 Page 10 of 20
 Certificate of Accreditation: Supplement
Grafeno Calibraciones S. de R.L. de C.V.
Blvd. Reynosa No. 1211, Colonia Rodolfo Garza Cantu
Reynosa, Tamaulipas, México. CP. 88797
Contact Name: Marco Romay Phone: 899-230-2160

Accreditation is granted to the facility to perform the following calibrations:

Electrical
MEASURED INSTRUMENT, RANGE OR NOMINAL CALIBRATION
CALIBRATION AND MEASUREMENT
QUANTITY OR GAUGE DEVICE SIZE AS EQUIPMENT
CAPABILITY EXPRESSED
APPROPRIATE AND REFERENCE
AS AN UNCERTAINTY (±)
STANDARDS USED
Equipment to Output 1 kV to 10 kV 400 mV Fluke 80K-40
AC Voltage 10 kV to 30 kV 600 mV Fluke 115
Dielectric Withstanding CEM EL -004
(HiPot Tester)FO
(50 Hz to 60 Hz)
Equipment to Output 0.01 mA to 2 mA 0.33 % of reading + 0.000 2 mA DMM Keithley 2000
Withstanding 2 mA to 20 mA 0.34 % of reading + 0.000 4 mA 6 ½ Digits
DC/AC Current Tester OILM-R46-1-2 E 12
(HiPot Tester)FO 20 mA to 120 mA 0.34 % of reading + 0.005 mA
Equipment to Resistance- 0.001 Ω to 10 Ω 0.3 % of reading DMM Keithley 2000
(Insulation Resistance 10 MΩ to 100 MΩ 0.6 % of reading 6 ½ Digits Decade
Megohmmeter) FO ANSI/SCTE 70,
100 MΩ to 1 GΩ 2.3 % of reading DKD 2622 -8
1 GΩ to 10 GΩ 2.3 % of reading
Equipment to Output 10 V to 1 000 V 0.5 % of reading DDM Fluke 114
High Voltage FO 1 kV to 10 kV 1 % of reading 80 K-40
HV Probe 40 KV
DKD 2622 -8
Function Generator Measure 50 Vpp to 1 Vpp 0.1 % of reading DDM
Wave Form 1 Vpp to 10 Vpp 0.5 % of reading Keithley 2000
(Sine, Square, Ramp, Universal counter
Triangle) 53131A
Amplitude: (in to 50 Ω)FO Hantek 6022B
Function Generator Measure 10 mV to 100 mV 0.1 % of reading Oscilloscope 20 MHz
Wave Form 100 mV to 50 V 0.016 % of reading OILM-R46-1-2 E 12
(Sine, Square, Ramp, DKD 2622-5
Triangle) DC OffsetFO
Function Generator Measure 100 ps to 1 ns 3.8 % of reading
Wave Form 1 ns to 1 s 2.6 % of reading
(Sine, Square, Ramp,
Triangle) Rise/Fall TimeFO
Function Generator Measure 1 % to 99 % 0.1 % of reading
Wave Form
(Sine, Square, Ramp,
Triangle) Duty CycleFO
Arbitrary Waveform 50 mVpp to 1 Vpp 0.1 % of reading
Generator (Sine, Square, 1 Vpp to 10 Vpp 0.5 % of reading
Ramp, Triangle)
Amplitude FO

Issue: 03/2022 This supplement is in conjunction with certificate #L22-239 Page 11 of 20

 Certificate of Accreditation: Supplement
Grafeno Calibraciones S. de R.L. de C.V.
Blvd. Reynosa No. 1211, Colonia Rodolfo Garza Cantu
Reynosa, Tamaulipas, México. CP. 88797
Contact Name: Marco Romay Phone: 899-230-2160

Accreditation is granted to the facility to perform the following calibrations:

Electrical
MEASURED INSTRUMENT, RANGE OR NOMINAL CALIBRATION AND CALIBRATION
QUANTITY OR GAUGE DEVICE SIZE AS MEASUREMENT EQUIPMENT
APPROPRIATE CAPABILITY EXPRESSED AND REFERENCE
AS AN UNCERTAINTY (±) STANDARDS USED
Temperature Calibration, -210 °C to -100 °C 0.27 °C Electrical Simulation of
Indication and Control -100 °C to -30 °C 0.16 °C Thermocouple Output
Equipment used with Omega DMM
Thermocouple Type JF -30 °C to 150 °C 0.14 °C Keithley 2000 6 ½ Digits
150 °C to 760 °C 0.17 °C Euramet cg-11 v-01
760 °C to 1 200 °C 0.23 °C
Temperature Calibration, -200 °C to -100 °C 0.33 °C Electrical Simulation of
Indication and Control -100 °C to -25 °C 0.18 °C TC Output M631
Equipment used with DMM Keithley 2000
Thermocouple Type KF -25 °C to 120 °C 0.16 °C 6 ½ Digits Probe
120 °C to 1 000 °C 0.26 °C Euramet cg-11 v-01
1 000 °C to 1 372 °C 0.42 °C DKD R-5-1
Temperature Calibration, 0 °C to 250 °C 0.85 °C
Indication and Control 250 °C to 1 000 °C 0.76 °C
Equipment used with
Thermocouple Type SF 1 000 °C to 1 400 °C 0.77 °C
1 400 °C to 1 767 °C 0.79 °C
Temperature Calibration, -250 °C to -150 °C 0.36 °C
Indication and Control -150 °C to 0 °C 0.31 °C
Equipment used with
Thermocouple Type TF 0 °C to 120 °C 0.25 °C
120 °C to 400 °C 0.24 °C
Temperature Calibration -259 °C to -80 °C 0.05 °C Electrical Simulation of
Indication and control -80 °C to 0 °C 0.05 °C RTD Output
Equipment used with M631 DMM Keithley 2000
RTD, Pt 395, 100 ΩFO 0 °C to 100 °C 0.07 °C 6 ½ Digits Probe
100 °C to 300 °C 0.09 °C Euramet cg-11 v-01
300 °C to 400 °C 0.1 °C DKD R-5-1
400 °C to 630 °C 0.12 °C
630 °C to 962 °C 0.23 °C
Temperature Calibration, -350 °F to -149 °F 0.24 °F Omega CL 3515R
Indication and Control -150 °F to 31 °F 0.13 °F DAQ Agilent 34970A
Equipment used with Electrical Simulation of
Thermocouple Type JFO 32 °F to 302 °F 0.15 °F TC Output
303 °F to 571 °F 0.19 °F RTD Pt 100
572 °F to 842 °F 0.21 °F Euramet-cg-8
ASTM E 230

Issue: 03/2022 This supplement is in conjunction with certificate #L22-239 Page 12 of 20

 Certificate of Accreditation: Supplement
Grafeno Calibraciones S. de R.L. de C.V.
Blvd. Reynosa No. 1211, Colonia Rodolfo Garza Cantu
Reynosa, Tamaulipas, México. CP. 88797
Contact Name: Marco Romay Phone: 899-230-2160

Accreditation is granted to the facility to perform the following calibrations:

Electrical
MEASURED INSTRUMENT, RANGE OR NOMINAL DEVICE CALIBRATION AND CALIBRATION
QUANTITY OR GAUGE SIZE AS APPROPRIATE MEASUREMENT EQUIPMENT
CAPABILITY EXPRESSED AND REFERENCE
AS AN UNCERTAINTY (±) STANDARDS USED
Temperature Calibration, -328 °F to 31°F 0.21 °F Omega CL 3515R
Indication and Control 32 °F to 390 °F 0.19 °F DAQ Agilent 34970A
Equipment used with Electrical Simulation of
Thermocouple Type KFO 391 °F to 750 °F 0.12 °F TC Output
751 °F to 1 470 °F 0.14°F RTD Pt 100
1 471 °F to 1 830 °F 0.17 °F Euramet-cg-8
ASTM E 230
1 831 °F to 2 200 °F 0.24 °F
GaussmetersFO 0.1 mT to 200 mT 1.2 % of reading Reference Magnet
(1 G to 2 000 G) MI 2100-039 Probe
Keithley 2000 6 ½ Digits
ASTM E 709
RF Signal Generator 100 kHz to 1 GHz 1.8 dB Spectrum Analyzer R3131A
Equipment to Amplitud Spectrum Analyzer/
Synchronous Level detector Measuring Receiver
(0 dBm to -115 dBm)FO HS-SA44B
RF Signal Generator 1 GHz to 4.4 GHz 1.6 dB OILM-R46-1-2 E 12
Equipment to Amplitud MIL-STD-188
Synchronous Level detector DKD 2622-14.1-11
(0 dBm to -115 dBm)FO
RF Signal Generator 100 kHz to 1 GHz 1.6 dB Spectrum Analyzer R3131A
Equipment to Amplitud Spectrum Analyzer/
Average Level detector Measuring Receiver
(0 dB to -70 dB)FO HS-SA44B
OILM-R46-1-2 E 12
DKD 2622-14.1,-11
Amplitude Modulation 100 kHz to 4.4 GHz 1.5 % of reading Spectrum Analyzer R3131A
AMFO Spectrum Analyzer/
Frequency Modulation 100 kHz to 4.4 GHz 1.4 % of reading Measuring Receiver
FMFO HS-SA44B
OILM-R46-1-2 E 12
DKD 2622-14.1,-11
Distortion Measurement FO 20 Hz to 20 kHz 3 dB SA R3131, HP8903B
(-99.99 dB to 0 dB 20 kHz to 100 kHz 4.7 dB OILM-R46-1-2 E 12 DKD
Rate: 10 Hz to 110 kHz) 2622-14.1,-11
Equipment to Measure 0 dBm to -115 dBm 1.8 dB Spectrum Analyzer/
RF Power Measuring Receiver HS-
(4.4 GHz) FO SA44B, HP 8594E , DKD
2622-14.1,-11, OILM-R46-
1-2 E 12

Issue: 03/2022 This supplement is in conjunction with certificate #L22-239 Page 13 of 20

 Certificate of Accreditation: Supplement
Grafeno Calibraciones S. de R.L. de C.V.
Blvd. Reynosa No. 1211, Colonia Rodolfo Garza Cantu
Reynosa, Tamaulipas, México. CP. 88797
Contact Name: Marco Romay Phone: 899-230-2160

Accreditation is granted to the facility to perform the following calibrations:

Electrical
MEASURED INSTRUMENT, RANGE OR NOMINAL DEVICE CALIBRATION AND CALIBRATION
QUANTITY OR GAUGE SIZE AS APPROPRIATE MEASUREMENT EQUIPMENT
CAPABILITY EXPRESSED AND REFERENCE
AS AN UNCERTAINTY (±) STANDARDS USED
Equipment to Measurement HP 3325A
Spectrum Analyzer HP 8657B
At the listed Frequencies FO Hp 33120A
0.1 Hz to 20 MHz FO 23.98 dBm to -56.02 dBm 1.6 dB DKD 2622-14.1,-11
FO
100 KHz to 4 000 MHz 13 dBm to -127 dBm 1.8 dB
Equipment to Output 1 kV to 10 kV 1.5 mv/V Fluke 80K-40-
DC Voltage 10 kV to 30 kV 40 mv/V Fluke 115
(Hipot)FO DKD 2622-Part 9.1
Equipment to Output 0.5 W to 10 kW 0.014 W Power Analyzer
DC WattsFO Magtrol 6530
(Max.570 V @ 19 A 1 W to 2 000 W 0.9 % Power Meter
Power Factor = 1) Data logger 380803
Equipment to Measure 10 mV to 2 V 51 µV + 0.45 mV/V Multifunction
AC Voltage 2 V to 20 V 430 µV + 0.68 mV/V Calibrator Fluke 5100B
At the listed frequenciesFO CEM EL-001 DKD
50 Hz to 10 kHz 2 V to 110 V 30 µV + 0.72 mV/V 2622-21,-15.1,-20 ,
Equipment to Measure 111 V to 200 V 22 mV + 0.54 mV/V
AC Voltage 200 V to 1 100 V 97 mV + 0.32 mV/V
At the listed frequenciesFO
50 Hz to 1 kHz
Equipment to Measure 0.101 2 mV to 10 V 0.4 dB Audio Analyzer
AC Voltage (-20 dBV to 79.9 dBV) DKD 2622 Part 4
At the listed frequenciesFO Open
10 Hz to 110 kHz
Equipment to Measure 5.012 V 0.4 dB
AC Voltage (14 dBV )
At the listed frequenciesFO 600 Ω load end
10 Hz to 110 kHz
Equipment to Measure DMM Keithley 2000
AC Voltage 6 ½ Digits
At the listed frequenciesFO DKD 2622 Part 4
3 Hz to 10 Hz 1.01 V to 10 V 0.35 % of reading + 0.003 V CEM EL-023
10 Hz to 20kHz 1.01 V to 10 V 0.06 % of reading + 0.003V
20 kHz to 50 Khz 1.01 V to 10 V 0.12 % of reading + 0.005 V
50 kHz to 100 kHz 1.01 V to 10 V 0.6 % of reading + 0.008V
100 kHz to 300 kHz 1.01 V to 10 V 0.4 % of reading + 0.008V

Issue: 03/2022 This supplement is in conjunction with certificate #L22-239 Page 14 of 20

 Certificate of Accreditation: Supplement
Grafeno Calibraciones S. de R.L. de C.V.
Blvd. Reynosa No. 1211, Colonia Rodolfo Garza Cantu
Reynosa, Tamaulipas, México. CP. 88797
Contact Name: Marco Romay Phone: 899-230-2160

Accreditation is granted to the facility to perform the following calibrations:

Electrical
MEASURED INSTRUMENT, RANGE OR NOMINAL CALIBRATION AND CALIBRATION
QUANTITY OR GAUGE DEVICE SIZE AS MEASUREMENT EQUIPMENT
APPROPRIATE CAPABILITY EXPRESSED AND REFERENCE
AS AN UNCERTAINTY (±) STANDARDS USED
Equipment to Measure DMM Keithley 2000
AC Voltage 6 ½ Digits
At the listed frequenciesFO DKD 2622 Part 4
3 Hz to 10 Hz 10.001 V to 100 V 0.35 % of reading + 0.03V CEM EL-023
10 Hz to 20 kHz 10.001 V to 100 V 0.06 % of reading + 0.03 V
20 kHz to 50 kHz 10.001 V to 100 V 0.12 % of reading + 0.05 V
50 kHz to 100 kHz 10.001 V to 100 V 0.6 % of reading + 0.08 V
100 kHz to 300 kHz 10.001 V to 100 V 0.4 % of reading + 0.08 V
Equipment to Measure DMM Keithley 2000
AC Voltage 6 ½ Digits
At the listed frequenciesFO DKD 2622-4, -5- 15.4 -20
3 Hz to 10 Hz 100.001 V to 750 V 0.35 % of reading + 0.23 V CEM EL-023
10 Hz to 20 kHz 100.001 V to 750 V 0.06 % of reading + 0.23 V
20 kHz to 50 kHz 100.001 V to 750 V 0.12 % of reading + 0.38 V
50 kHz to 100 kHz 100.001 V to 750 V 0.6 % of reading + 0.6 V
100 kHz to 300 kHz 100.001 V to 750 V 0.4 % of reading + 0.6 V
Equipment to Measure DAQ 34970A
AC Voltage DKD 2622-4-5,
At the listed frequenciesFO 15.4-20, CEM EL-023
3 Hz to 5 Hz 100 mV to 100 V 1 % of reading + 0.04 mV
5 Hz to 10 Hz 100 mV to 100 V 0.35 % of reading + 0.04 mV
10 Hz to 20 kHz 100 mV to 100 V 0.06 % of reading + 0.0 5mV
20 kHz to 50 kHz 100 mV to 100 V 0.12 % of reading + 0.08 mV
50 kHz to 100 kHz 100 mV to 100 V 4 % of reading + 0.08 mV
Equipment to Measure
AC Voltage
At the listed frequenciesFO
3 Hz to 5 Hz 100 V to 300 V 1 % of reading + 0.24 V
5 Hz to 10 Hz 100 V to 300 V 0.06 % of reading + 0.09 V
10 Hz to 20 kHz 100 V to 300 V 0.12 % of reading + 0.15 V
20 kHz to 50 kHz 100 V to 300 V 0.6 % of reading + 0.24 V
50 kHz to 10 0kHz 100 V to 300 V 0.4 % of reading + 0.15 V
Equipment to Measure Fluke 787
AC Voltage Process Meter DKD 2622-
At the listed frequenciesFO 4, -5, 15.4-20,
50 Hz to 60 Hz 751 V to 1 000 V 0.7 % of reading CEM EL-023
60 Hz to 200 Hz 751 V to 1 000 V 1.2 % of reading
Issue: 03/2022 This supplement is in conjunction with certificate #L22-239 Page 15 of 20
 Certificate of Accreditation: Supplement
Grafeno Calibraciones S. de R.L. de C.V.
Blvd. Reynosa No. 1211, Colonia Rodolfo Garza Cantu
Reynosa, Tamaulipas, México. CP. 88797
Contact Name: Marco Romay Phone: 899-230-2160

Accreditation is granted to the facility to perform the following calibrations:

Electrical
MEASURED INSTRUMENT, RANGE OR NOMINAL DEVICE CALIBRATION AND CALIBRATION
QUANTITY OR GAUGE SIZE AS APPROPRIATE MEASUREMENT EQUIPMENT
CAPABILITY EXPRESSED AND REFERENCE
AS AN UNCERTAINTY (±) STANDARDS USED
Equipment to Measure Fluke 787
AC Voltage Process Meter DKD
At the listed frequenciesFO 2622-4, -5, 15.4-20,
200 Hz to 500 Hz 751 V to 1 000 V 7 % of reading CEM EL-023
Equipment to Measure Power Meter Magtrol
AC Voltage 6530 CEM EL-014
At the listed frequenciesFO
5 Hz to 500 Hz 30 V to 600 V (0.32 + 0.099V/V) mV
500 Hz to 10 kHz 30 V to 600 V (3.5 + 0.091V/V) mV
10 kHz to 100 kHz 30 V to 600 V (35 + 0.089V/V) mV
Equipment to Measure 40 Hz to 400 Hz 0.5 % of reading + 5 digits Power Meter Datalogger
AC Voltage 380803 CEM EL-014
At the listed frequencies
1 V to 750 VFO
Equipment Output AC Power Power Analyzer Magtrol
At the listed frequenciesFO 6530
(Max.570 V @ 19A to 60 Hz CEM EL-014
Power Factor = 1)
5 Hz to 500 Hz 0.5 W to 10 kW (0.37 + 2.1 W) mW
500 Hz to 10 kHz 0.5 W to 10 kW (0.374 + 3.2 W) mW
10 kHz to 100 kHz 0.5 W to 10 kW (0.389 + 3.8 W) mW
Equipment Output AC Power Power Meter Datalogger
At the listed frequenciesFO 380803 CEM EL-014
(Max.570 V @ 19A to 60 Hz
Power Factor = 1)
40 Hz to 400 Hz 1W to 2 000 W 0.5 % of reading + 5 digits

Equipment to Output Audio Analyzer 6630

AC Level Vrms at 100 KΩ
(Impedance (>= 100k Ω)
At the listed frequenciesFO
10 Hz to 110 kHz 316 mVrms to 100Vrms 0.4 Vrms
(-70 dB to 40 dB)
Equipment to Measure 10µA to 200 µA 0.047 µA + 800 µA/A Multifunction calibrator
DC Current 0.2 mA to 2 mA 0.037 µA + 820 µA/A Fluke 5100B
At the listed frequenciesFO CEM EL-001
2.01 mA to 20 mA 0.036 µA + 820 µA/A
20 mA to 200 mA 0.036 µA + 820 µA/A
200 mA to 2 A 45 µA + 660 µA/A

Issue: 03/2022 This supplement is in conjunction with certificate #L22-239 Page 16 of 20

 Certificate of Accreditation: Supplement
Grafeno Calibraciones S. de R.L. de C.V.
Blvd. Reynosa No. 1211, Colonia Rodolfo Garza Cantu
Reynosa, Tamaulipas, México. CP. 88797
Contact Name: Marco Romay Phone: 899-230-2160

Accreditation is granted to the facility to perform the following calibrations:

Electrical
MEASURED INSTRUMENT, RANGE OR NOMINAL CALIBRATION AND MEASUREMENT CALIBRATION
QUANTITY OR GAUGE DEVICE SIZE AS CAPABILITY EXPRESSED EQUIPMENT
APPROPRIATE AS AN UNCERTAINTY (±) AND REFERENCE
STANDARDS USED
Equipment to Measure 2 A to 200 A 13 mA + 11 mA/A DC Supply & HP
DC Current 34401A/ w Shunt
At the listed frequenciesFO CEM EL-023
4 mA to 20 mA 0.5 % of reading Fluke 787
Process Meter Source /
Simulate mode
DKD R-6-1
CEM ME-010
Equipment to Output 1 mA to 10 mA 0.003 2 % of reading + 0.000 12 mA KL-283 Electronic
DC Current 10.01 mA to 100 mA 0.009 8 % of reading + 0.085 mA Load
At the listed frequenciesFO CEM EL-023
100.1 mA to 1 A 0.019 % of reading + 0.000 02 A
1 A to 10 A 0.009 % of reading + 0.000 38 A
10 mA to 1 A 0.009 8 % of reading + 0.085 mA DAQ34970A/34901A
1 A to 3 A 0.019 % of reading + 0.000 02 A Keithley 2000
CEM EL-023
10.1 A to 500 A 0.06 % of reading + 0.011 A Shunt/ DMM
Keithley 2000
CEM EL-023
1 A to 20 A 0.012 % of reading + 0.005 4 A Magtrol 6530 CEM
EL-014
2 A to 20 A 0.5 % of reading + 5 digits Power Meter Datalogger
380803 CEM EL-014
Equipment to Measure Multifunction Calibrator
AC Current Fluke 5100B
At the listed frequenciesFO CEM EL-001
50 Hz to 1kHz 10 µA to 200 µA 0.32 µA + 2 µA/mA
50 Hz to 1kHz 200.1 µA to 1 mA 3.1 µA + 2 µA/mA
50 Hz to 1kHz 2.01 mA to 20 mA 30 µA + 2 µA/mA
50Hz to 1kHz 20.01 mA to 200 mA 30 µA + 2 µA/mA
50 Hz to 1kHz 200.01 mA to 2 A 1 µA + 3.7 µA/mA
Equipment to Measure 2 A to 10 A 50 µA + 8.7 µA/mA AC Source APT 6010,
AC Current Shunt, Coil 50 turns
At the listed frequenciesFO CEM EL-007
15 Hz to 1 000 Hz
Equipment to Output Keithley 2000
AC Current DAQ 34970A/34901A
At the listed frequenciesFO CEM EL-025
3 Hz to 10 Hz 10 µA to 1 A 0.009 8 % of reading + 0.085 mA
10 Hz to 5 kHz 10 µA to 1 A 0.019 % of reading + 0.000 02 A

Issue: 03/2022 This supplement is in conjunction with certificate #L22-239 Page 17 of 20

 Certificate of Accreditation: Supplement
Grafeno Calibraciones S. de R.L. de C.V.
Blvd. Reynosa No. 1211, Colonia Rodolfo Garza Cantu
Reynosa, Tamaulipas, México. CP. 88797
Contact Name: Marco Romay Phone: 899-230-2160

Accreditation is granted to the facility to perform the following calibrations:

Electrical
MEASURED INSTRUMENT, RANGE OR NOMINAL CALIBRATION AND MEASUREMENT CALIBRATION
QUANTITY OR GAUGE DEVICE SIZE AS CAPABILITY EXPRESSED EQUIPMENT
APPROPRIATE AS AN UNCERTAINTY (±) AND REFERENCE
STANDARDS USED
Equipment to Output Keithley 2000
AC Current DAQ 34970A/34901A
At the listed frequenciesFO CEM EL-025
3 Hz to 10 Hz 1.01 A to 3 A 0.0078 % of reading + 0.085 mA
10 Hz to 5 kHz 1.01 A to 3 A 0.059 % of reading + 0.000 02 A
Equipment to Output Power Analyzer
AC Current Magtrol 6530 Shunt
At the listed frequenciesFO CEM EL-025
5 Hz to to 500 Hz 1 A to 20 A (3.5 + 0.091V/V) mV
500 Hz to 10 kHz 1 A to 20 A (0.35 + 0.089V/V) mV
10 kHz to 100 kHz 1 A to 20 A (3.5 + 0.091V/V) mV
Equipment to Output 2 A to 200 A (0.35 + 0.089V/V) mV
AC Current
At the listed frequenciesFO
50 Hz to 60 Hz
Equipment to Measure 0.001 Ω to 1 Ω 0.15 m Ω + 65 µΩ/Ω Multifunction Calibrator
ResistanceFO 1.1 Ω to 10 Ω 0.37 m Ω + 74 µΩ/Ω Fluke 5100B
CEM EL-001
10.1 Ω to 100 Ω 0.52 m Ω + 31 µΩ/Ω
100.1 Ω to 1 kΩ 34 µΩ/Ω
1.01 kΩ to 10 kΩ 20 m Ω + 30 µΩ/Ω
10.01 kΩ to 100 kΩ 0.1 mΩ/Ω
10.001 kΩ to 1 MΩ 0.3 mΩ/Ω
1 MΩ to 10 MΩ 0.33 mΩ/Ω
1 Ω to 1000 MΩ 0.1 % of reading Decade Resístance
EU30A
Equipment to Measure 0.05 Ω to 0.15 Ω 0.6 % of reading High Resistance
Insulation Resistance 100 kΩ to140 kΩ 1.3 % of reading Standard Decade Box
(Fixed Points) CEM EL-007
Up to 10 kVFO 200 kΩ to 500 kΩ 1.8 % of reading CEM EL-004
1 GΩ to 5 GΩ 2.3 % of reading CEM EL-001
Equipment to Measure 0.1 nF to 100 nF 0.3 % of reading Decade Box EICO 1180
Capacitance Meter & LCR CEM EL-001 CEM
MeterFO EL-007

Issue: 03/2022 This supplement is in conjunction with certificate #L22-239 Page 18 of 20

 Certificate of Accreditation: Supplement
Grafeno Calibraciones S. de R.L. de C.V.
Blvd. Reynosa No. 1211, Colonia Rodolfo Garza Cantu
Reynosa, Tamaulipas, México. CP. 88797
Contact Name: Marco Romay Phone: 899-230-2160

Accreditation is granted to the facility to perform the following calibrations:

Chemical
MEASURED INSTRUMENT, RANGE OR NOMINAL DEVICE CALIBRATION AND CALIBRATION
QUANTITY OR GAUGE SIZE AS APPROPRIATE MEASUREMENT EQUIPMENT
CAPABILITY EXPRESSED AND REFERENCE
AS AN UNCERTAINTY (±) STANDARDS USED
pH MetersFO 4 pH 0.02 pH pH buffer Solutions
7 pH 0.02 pH ASTM E70
10 pH 0.02 pH
Conductivity MeterFO 4 mS/cm to 1 000 µS/cm 1 µS/cm Conductivity Solutions
ASTM D 1125
RefractometersFO 0.006 n∙m to 1.332 99 n∙m 0.000 2 n∙m Reference Materials
1.472 3 n∙m to 1.467 9 n∙m 0.000 9 n∙m ASTM D 3321
1.4 n∙m to 1.7 n∙m 0.000 2 n∙m
Alcohol MeterF 0.000 019 BAC to 0.16 BAC (9.9 x 10-3 + 9 x 10-4BAC) Alcohol Reference Solution
(ARS)
BS EN 50436-1

1. The CMC (Calibration and Measurement Capability) stated for calibrations included on this scope of
accreditation represents the smallest measurement uncertainty attainable by the laboratory when performing a
more or less routine calibration of a nearly ideal device under nearly ideal conditions. It is typically expressed
at a confidence level of 95 % using a coverage factor k (usually equal to 2). The actual measurement
uncertainty associated with a specific calibration performed by the laboratory will typically be larger than the
CMC for the same calibration since capability and performance of the device being calibrated and the
conditions related to the calibration may reasonably be expected to deviate from ideal to some degree.
2. The laboratories range of calibration capability for all disciplines for which they are accredited is the interval
from the smallest calibrated standard to the largest calibrated standard used in performing the calibration. The
low end of this range must be an attainable value for which the laboratory has or has access to the standard
referenced. Verification of an indicated value of zero in the absence of a standard is common practice in the
procedure for many calibrations but by its definition it does not constitute calibration of zero capacity.
3. The presence of a superscript F means that the laboratory performs calibration of the indicated parameter at its
fixed location. Example: Outside MicrometerF would mean that the laboratory performs this calibration at its
fixed location.
4. The presence of a superscript O means that the laboratory performs calibration of the indicated parameter
onsite at customer locations. Example: Outside MicrometerO would mean that the laboratory performs this
calibration onsite at the customer’s location.
5. The presence of a superscript FO means that the laboratory performs calibration of the indicated parameter
both at its fixed location and onsite at customer locations. Example: Outside MicrometerFO would mean that
the laboratory performs this calibration at its fixed location and onsite at customer locations.
6. Measurement uncertainties obtained for calibrations performed at customer sites can be expected to be larger
than the measurement uncertainties obtained at the laboratories fixed location for similar calibrations. This is
due to the effects of transportation of the standards and equipment and upon environmental conditions at the
customer site which are typically not controlled as closely as at the laboratories fixed location.

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 Certificate of Accreditation: Supplement
Grafeno Calibraciones S. de R.L. de C.V.
Blvd. Reynosa No. 1211, Colonia Rodolfo Garza Cantu
Reynosa, Tamaulipas, México. CP. 88797
Contact Name: Marco Romay Phone: 899-230-2160

Accreditation is granted to the facility to perform the following calibrations:

7. The term D represents diameter in inches or millimeters as appropriate to the uncertainty statement.
8. The term L represents length in inches or millimeters as appropriate to the uncertainty statement.
9. The term Wt represents weight in pounds or grams (including SI multiple and submultiple units) appropriate to
the uncertainty statement.
10. The term T represents torque in N•m (including SI multiple and submultiple units) for the international system
of units (the SI) or ozf•in, lbf•in and lbf•ft for the USC system of units.
11. The term P represents pressure in units appropriate to the uncertainty statement.

Issue: 03/2022 This supplement is in conjunction with certificate #L22-239 Page 20 of 20