Table of Tolerances

NABL Accredited Laboratory : Weightronics Mass Calibration Laboratory (WMCL)

TABLE 1 - Maximum Permissible Errors for Weights ( in mg) as per OIML R111 - 1 Edition 2004 (E)

NOMINAL VALUE

CLASS - E1

CLASS - E2

CLASS - F1

CLASS - F2

CLASS - M1

CLASS - M2

CLASS - M3

1 mg

0.003 0.006 0.02 0.06 0.2 - -

2 mg

0.003 0.006 0.02 0.06 0.2 - -

5 mg

0.003 0.006 0.02 0.06 0.2 - -
10 mg 0.003 0.008 0.025 0.08 0.25 - -
20 mg 0.003 0.01 0.03 0.1 0.3 - -
50 mg 0.004 0.012 0.04 0.12 0.4 - -

100 mg

0.005 0.016 0.05 0.16 0.5 - -
200 mg 0.006 0.02 0.06 0.2 0.6 - -
500 mg 0.008 0.025 0.08 0.25 0.8 - -
1 g 0.01 0.03 0.1 0.3 1 - -
2 g 0.012 0.04 0.12 0.4 1.2 - -
5 g 0.016 0.05 0.16 0.5 1.6 - -
10 g 0.02 0.06 0.2 0.6 2 - -
20 g 0.025 0.08 0.25 0.8 2.5 - -
50 g 0.03 0.1 0.3 1 3 10 30
100 g 0.05 0.16 0.5 1.6 5 16 50
200 g 0.1 0.3 1 3 10 30 100
500 g 0.25 0.8 2.5 8 25 80 250
2 kg 1 3 10 30 100 300 1000
5 kg 2.5 8 25 80 250 800 2500
10 kh 5 16 50 160 500 1600 5000
20 kg 10 30 100 300 1000 3000 10000
50 kg 25 80 250 800 2500 8000 25000
100 kg - 160 500 1600 5000 16000 50000
200 kg - 300 1000 3000 10000 30000 100000
500 kg - 800 2500 8000 25000 80000 250000
1000 kg - 1600 5000 16000 50000 160000 500000

 

TABLE 2 - A Possible Selection Table of Weights for Calibration of Weighing Balances

Capacity 10 g 1 g 100 mg 10 mg 1 mg 0.1 mg <0.1 mg
Upto 50 g - - - M1 F2 E2 E1
Upto 100 g - - - M1 F1 E1 E1
Upto 500 g - - M1 F2 E2 - -
Upto 1 kg - M1 M1 F1 E1 - -
Upto 5 kg - M1 F2 E2 - - -
Upto 10 kg - M1 F1 E1 - - -
Up to 50 kg M1 F2 E2 - - - -
Upto 100 kg M1 F1 - - - - -