Schedule 5

Maximum permissible uncertainty—mass (State primary, secondary and tertiary standards)

Current

(paragraphs 18(5)(b) and (c), 25(b) and 26(a) and subparagraphs 25(d)(i) and 26(c)(i))

Column 1 Denomination	Column 2 Maximum permissible uncertainty (at 95% level of confidence): State primary standard (in mg)	Column 3 Maximum permissible uncertainty (at 95% level of confidence): State secondary standard (in mg)	Column 4 Maximum permissible uncertainty (at 95% level of confidence): State tertiary standard (in mg)
50 kg		84.000	267.00
25 kg		42.000	127.00
20 kg	10.000	33.000	100.00
10 kg	5.000	17.000	53.00
5 kg	3.000	8.000	27.00
2 kg	1.000	3.000	10.00
1 kg	0.500	2.000	6.00
500 g	0.300	0.800	2.70
200 g	0.100	0.300	1.00
100 g	0.050	0.200	0.60
50 g	0.030	0.100	0.40
20 g	0.030	0.080	0.30
10 g	0.020	0.070	0.20
5 g	0.020	0.050	0.17
2 g	0.010	0.040	0.14
1 g	0.010	0.030	0.10
500 mg	0.008	0.030	0.09
200 mg	0.007	0.020	0.07
100 mg	0.005	0.020	0.06
50 mg	0.004	0.010	0.04
20 mg	0.003	0.010	0.04
10 mg	0.003	0.008	0.03
5 mg	0.002	0.007	0.02
2 mg	0.002	0.007	0.02
1 mg	0.002	0.007	0.02

Note:

The maximum permissible uncertainties in this table are based on OIML R 111.

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