Calibration Certificate of Test Weights

Unique Lab Report No : CC321323000000068F Certificate No. : NC - 68

Page No. : 1 of 3 Certificate Issue Date : January 29, 2023
Calibration Due Date : January 28, 2024
Customer Name : Quality Calibration Centre
104, Horizon Tower, Balaji Temple Road, Amli
Silvasa - 396230
Dadra and Nagar Haveli
India
Instrument Detail : Calibration Weights Sets
Instrument Condition : Excellent Make : PHWAC
Date of Receipt : January 28, 2023 Model :
Inward Reference No : JO - 68 Range of Capacity : 1 mg to 200 g
Density of Reference : Austenitic Stainless Steel (8000 ± 50) Accuracy Class : OIML E2 Class
Weights kg/m3, (Assumed Density) Serial Number :
Density - Test Weights : Austenitic Stainless Steel (8000 ± 50) Equipment ID : QCC/M/WB-01
kg/m3, (Assumed Density) Stabilization Time (hrs) : 22:00
Shape of Weights : Sheet Type Milligram Weights as per Avg. Temperature : 25.2 °C
OIML designated Shapes Avg. Pressure : 1011.2 mbar
Gram Weights Cylindrical Knob Shape Avg. Humidity : 53.7 % Rh
Calibration Location : At Laboratory
Important Remarks :
01 Environmental conditions mentioned in the certificate was observed during the calibration.
Temperature change is limited to : ± 0.7 °C per hour with a maximum of ± 1 °C per 12 hours
Relative Humidity change is limited to : 40 % to 60 % with a maximum of ± 10 % per 4 hours
02 The weights listed on this calibration report have been compared to reference mass standards that are traceable to
the SI Units trough National / International Standards.
03 The weights calibrated in this report have been calibrated in accordance with Laboratory Procedure NC-SOP-001
(Substitution Method, ABBA Cycle). The calibration performed meets the criteria as described in the current
revisions of NABL 129 and OIML R-111.
04 Nstar Corp (Metrology Department) have not performed any adjustments and repairs of test instruments before
calibrations. The results shown are as it was received and observed or calibrated.
05 The calibration certificate issued for weights/mass used for scientific or industrial purpose only.
06 This certificate of calibration shall not be reproduced except in full, without the written approval of Nstar Corp.
07 This certificate is issued for the items submitted to and calibrated by NSTAR Corp (Metrology Department).

Approved by:
Mr. Naitik Patel
Quality Manager
 Calibration Certificate of Test Weights
Unique Lab Report No : CC321323000000068F Certificate No. : NC - 68
Page No. : 2 of 3 Certificate Issue Date : January 29, 2023
Calibration Due Date : January 28, 2024
* Results of Calibration *
Tolerance
Nominal mass Conventional Expanded Calibration Calibration
Serial Number Equipment ID Limit
value Mass value Uncertainity (U) By Date
(MPE)
(g) (g) (±) (g) (±) (g)
1 mg 0.001 002 0 0.000 006 0.000 001 0 Harsh Patel 29-01-2023
2 mg 0.001 996 7 0.000 006 0.000 001 0 Harsh Patel 29-01-2023
2 mg * 0.001 998 5 0.000 006 0.000 001 1 Harsh Patel 29-01-2023
5 mg 0.005 000 0 0.000 006 0.000 001 0 Harsh Patel 29-01-2023
10 mg 0.010 004 5 0.000 008 0.000 001 0 Harsh Patel 29-01-2023
20 mg 0.020 006 3 0.000 010 0.000 001 0 Harsh Patel 29-01-2023
20 mg * 0.020 002 7 0.000 010 0.000 001 0 Harsh Patel 29-01-2023
50 mg 0.050 010 5 0.000 012 0.000 001 3 Harsh Patel 29-01-2023
100 mg 0.100 013 3 0.000 016 0.000 001 6 Harsh Patel 29-01-2023
200 mg 0.200 000 6 0.000 020 0.000 002 0 Harsh Patel 29-01-2023
200 mg * 0.200 011 4 0.000 020 0.000 002 0 Harsh Patel 29-01-2023
500 mg 0.500 012 7 0.000 025 0.000 002 6 Harsh Patel 29-01-2023
1 g 1.000 017 3 0.000 030 0.000 003 0 Harsh Patel 29-01-2023
2 g 2.000 026 3 0.000 040 0.000 004 0 Harsh Patel 29-01-2023
2 g * 2.000 022 4 0.000 040 0.000 004 0 Harsh Patel 29-01-2023
5 g 5.000 036 8 0.000 050 0.000 005 0 Harsh Patel 29-01-2023
10 g 10.000 040 0.000 060 0.000 006 7 Harsh Patel 29-01-2023
20 g 20.000 052 0.000 080 0.000 008 0 Harsh Patel 29-01-2023
20 g * 20.000 063 0.000 080 0.000 008 0 Harsh Patel 29-01-2023
50 g 50.000 049 0.000 100 0.000 011 0 Harsh Patel 29-01-2023
100 g 100.000 064 0.000 160 0.000 016 0 Harsh Patel 29-01-2023
200 g 200.000 22 0.000 300 0.000 032 Harsh Patel 29-01-2023
200 g * 200.000 15 0.000 300 0.000 039 Harsh Patel 29-01-2023

Report :
> Mass values of all the above stated weights are within the maximum permissible errors of OIML E2 Class
accuracy class as per OIML R-111.
> The reported uncertainty is at converage factor k=2 which corresponds to a coverage probability of approximately 95% for
a normal distribution. The contribution of uncertainty originating from the mass standards and balances used, the
weighing process and the air buoyancy correction are taken into account.
> The reported Expanded Uncertainity (U) for the Nominal mass value is 1/3 of the maximum permissible error (MPE) for
the above stated accuracy class as defined by the document quoted in reference.
 Calibration Certificate of Test Weights
Unique Lab Report No : CC321323000000068F Certificate No. : NC - 68
Page No. : 3 of 3 Certificate Issue Date : January 29, 2023
Calibration Due Date : January 28, 2024
* Masters Used for Calibration *
Traceability
Nominal mass Standards Calibration Mass Comparator
Equipment ID Certificate Procedure
value Used Due Date / Balance(s) Used
Number
NC-EQP-001 1 mg to 500 mg OIML E1 Z2027234 25-08-2023 6.1 g X 0.0001 mg

NC-EQP-001 1 g to 5 kg OIML E1 Z2027233 25-08-2023 100 g X 0.001 mg NC-SOP-001,

Substitution
1 kg X 0.01 mg
Method,
ABBA - 3 Cycles

Document No : NC-FMT-EXE-04 Issue No : 02, Issue Date : 01.12.2022, Revision No : 00, Revision Date : 00.00.0000

Approved by:
Mr. Naitik Patel
Quality Manager