SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017
INSTROTEK, INC.5
1 Triangle Drive
Research Triangle Park, NC 27709
Alexis Jones Phone: 919 875 8371
CALIBRATION
Valid To: SEE FOOTNOTE 5 Certificate Number: 6369.01
In recognition of the successful completion of the A2LA evaluation process, accreditation is granted to this laboratory to
perform the following tests listed below1, 4:
I. Dimensional
Parameter/Equipment Range CMC2 (±) Comments Location
Master Density Blocks (1120 to 2723) 0.1 % of reading Calipers, load cells, RDU
kg/m3 scales, & class 1
weights; ASTM
D7759
Master Moisture (16 to 800) kg/m3 0.2 % of reading Calipers, load cells, RDU
Blocks scales, & class 1
weights; ASTM
D7759
In-House Master Density:
Gauges (Density (1120 to 2723) 0.2 % of reading Calibrated on master RDU
System) kg/m3 density & master
moisture blocks;
ASTM D7759
In-House Master Moisture:
Gauges (Moisture (16 to 800) kg/m3 0.1 % of reading Calibrated on master RDU
System) density & master
moisture blocks;
ASTM D7759
(A2LA Cert. No. 6369.01) Revised 04/01/2022 Page 1 of 6
Parameter/Equipment Range CMC2 (±) Comments Location
Secondary Density (1120 to 2723) kg/m3 0.3 % of reading InstroTek 3500, RDU
Reference Blocks, Troxler 3430; ASTM
Including ValiDator I (16 to 800) kg/m3 1 % of reading D7759
& II Systems3
Gyratory Internal (0.4 to 2.5)° 0.018º Pine RAM device; RDU
Angle3 AASHTO T312
Gyratory Compaction (25 to 300) mm 0.28 mm 1-2-3 blocks RDU
Calipers3 (1 to 300) mm 0.043 mm Gage blocks, ASTM RDU
B89.1.14
Dial Indicators3 (1 to 100) mm 0.069 mm Gage blocks, ASTM RDU
D6027
Displacement (1 to 50) mm 0.14 mm Gage blocks, ASTM RDU
Transducers3 D6027
Steel Rulers3 (1 to 600) mm 0.15 mm Gage blocks, calipers, RDU
& sight glass; ASTM
F2203
Gyratory & Proctor (8 to 5000) cm3 0.15 mm Mitutoyo three-point RDU
Molds3 bore gauge, &
Mitutoyo absolute
caliper; AASHTO
T312 & ASTM D1557
Gage Blocks & 1-2-3 (1 to 100) mm 0.0026 mm Mitutoyo digimatic RDU
Blocks3 indicator & grade 0
gage blocks; ASME
B89.1.2M
(A2LA Cert. No. 6369.01) Revised 04/01/2022 Page 2 of 6
Parameter/Equipment Range CMC2 (±) Comments Location
Sieves3 (0.074 to 50) mm 0.08 mm Fowler optical RDU
comparator, Mitutoyo
caliper; ASTM E11
II. Mechanical
Parameter/Equipment Range CMC2 (±) Comments Location
Force – Compression ASTM E4 RDU
Tension3
(50 to 2000) lbf 0.18 lbf 2-kip load cell
(2001 to 10 000) lbf 1.1 lbf 10-kip load cell
(10 001 to 50 000) lbf 8.3 lbf 50-kip load cell
(50 000 to 600 000) lbf 80 lbf 600-kip load cell
Proving Ring3 ASTM E4 RDU
(50 to 2000) lbf 0.18 lbf 2-kip load cell
(2001 to 10 000) lbf 1.1 lbf 10-kip load cell
Pressure3 – Measuring ASME B40.100 RDU
Equipment
(1 to 3447) kPa 0.014 kPa Fluke 700RG06
reference gauge
Vacuum3 – Measuring ASME B40.100 RDU
Equipment
(101.3 to 0.13) kPa 0.26 kPa Fluke 700GA4
vacuum gauge;
Gyratory Compaction3 (1500 to 18 000) N 0.1 % of reading 5000 lbf providing RDU
ring or 3000 lbf load
cell; AASHTO T312
(A2LA Cert. No. 6369.01) Revised 04/01/2022 Page 3 of 6
Parameter/Equipment Range CMC2 (±) Comments Location
Scales & Balances3 20 kg 0.14 g NIST Handbook 44 RDU
5 kg 0.017 g
2 kg 0.012 g Class F weights
1 kg 0.009 g
500 g 0.003 g Class 1 weights
200 g 0.004 g
100 g 0.001 g
50 g 0.003 g
20 g 0.002 g
10 g 0.003 g
5g 0.022 g
2g 0.006 g
1g 0.0018 g
III. Nuclear Radiation
Parameter/Equipment Range CMC2 (±) Comments Location
Nuclear Density:
Moisture/Density (1120 to 2723) kg/m3 0.6 % of reading Secondary density & RDU, GRR, SFO,
Gauges (Density moisture reference DEN, PHL
System, Blocks, & Moisture: blocks; ASTM D7759
ValiDator System) (16 to 800) kg/m3 2 % of reading
Nuclear Density (1120 to 2723) kg/m3 0.6 % of reading Master density blocks RDU, GRR, SFO,
Gauges (Blocks & or secondary density DEN, PHL
ValiDator System) reference blocks;
ASTM D7759
IV. Thermodynamics
Parameter/Equipment Range CMC2 (±) Comments Location
Ovens & (-80 to 100) °C 0.15 ºC Control Company RDU
Environmental 6412; ASTM E2181
Chambers3 (100.1 to 600) °C 2.1 ºC
(A2LA Cert. No. 6369.01) Revised 04/01/2022 Page 4 of 6
Parameter/Equipment Range CMC2 (±) Comments Location
Liquid-In-Glass (-20 to 200) °C 0.29 ºC Control Company RDU
Thermometers3 6412 with 9009 Fluke
(200.1 to 400) °C dry block; ASTM E1
Digital Thermometers3 (-20 to 100) °C 0.28 ºC Control Company RDU
6412 with 9099 Fluke
(100.01 to 400) °C 0.32 ºC Dry block; ASTM
E1137 & E2181
IR Thermometers3 (25 to 400) °C 0.63 ºC Ametek Jofra ETC- RDU
400R IR calibrator;
ASTM E2847
V. Time & Frequency
Parameter/Equipment Range CMC2 (±) Comments Location
Stopwatch3 60 sec to 24 hrs 0.088 s 1025 traceable RDU
stopwatch; NIST 960-
12
Timers3 (12 to 24) hrs 0.088 s 1025 traceable RDU
stopwatch; NIST 960-
12
RPM3 (10 to 24 000) rpm 0.21 rpm Extech tachometer; RDU
NIST 960-12
________________
1
This laboratory offers commercial dimensional testing/calibration service.
2
Calibration and Measurement Capability Uncertainty (CMC) is the smallest uncertainty of measurement that a laboratory
can achieve within its scope of accreditation when performing more or less routine calibrations of nearly ideal
measurement standards or nearly ideal measuring equipment. CMCs represent expanded uncertainties expressed at
approximately the 95 % level of confidence, usually using a coverage factor of k = 2. The actual measurement uncertainty
of a specific calibration performed by the laboratory may be greater than the CMC due to the behavior of the customer’s
device and to influences from the circumstances of the specific calibration.
(A2LA Cert. No. 6369.01) Revised 04/01/2022 Page 5 of 6
3
Field calibration service is available for this calibration. Please note the actual measurement uncertainties achievable on a
customer's site can normally be expected to be larger than the Calibration and Measurement Capability Uncertainty
(CMC) found on the A2LA Scope. Allowance must be made for aspects such as the environment at the place of calibration
and for other possible adverse effects such as those caused by transportation of the calibration equipment. The usual
allowance for the uncertainty introduced by the item being calibrated, (e.g. resolution) must also be considered and this,
on its own, could result in the actual measurement uncertainty achievable on a customer’s site being larger than the CMC.
4
This scope meets A2LA’s P112 Flexible Scope Policy.
5
The locations of the laboratories that can perform the calibration are given by a three-letter code with valid to dates given
in the table below:
Location Code Valid to Dates
1 Triangle Drive, Research Triangle RDU 5/31/2023
Park, NC 27709
4495 44th Street SE, Suite A, Grand GRR 5/31/2023
Rapids, MI 49512
5052 Commercial Circle, Concord, SFO 7/31/2022
CA 94520
850 E 73rd Avenue, Unit 12, Denver, DEN 7/31/2022
CO 80229
3580 Progress Drive, Unit O, PHL 5/31/2023
Bensalem, PA 19020
(A2LA Cert. No. 6369.01) Revised 04/01/2022 Page 6 of 6
Accredited Laboratory
A2LA has accredited
INSTROTEK, INC.
for technical competence in the field of
Calibration
This laboratory is accredited in accordance with the recognized International Standard ISO/IEC 17025:2017
General requirements for the competence of testing and calibration laboratories. This laboratory also meets R205 – Specific
Requirements: Calibration Laboratory Accreditation Program. This accreditation demonstrates technical competence for a defined
scope and the operation of a laboratory quality management system
(refer to joint ISO-ILAC-IAF Communiqué dated April 2017).
Presented this 17th day of January 2022
_______________________
Vice President, Accreditation Services
For the Accreditation Council
Certificate Number 6369.01
Valid to: See Scope of Accreditation
For the calibrations to which this accreditation applies, please refer to the laboratory’s Calibration Scope of Accreditation.
