Reference tables | Trade Measurement

Table 1: Standards of mass

Note:

Refer to Schedule 3 of the Weights and Measures Regulations 1999 as amended for the Maximum Permissible Errors for Class M₃.

Corrected errors are taken from OIML R111 Table 1

Nominal Value of Standards	For testing Traders’ M₁ and class II weighing instruments	Inspectors and Accredited Persons’ Working Standards	Traders’ Weight	Traders’ Weights Accredited Persons' standards > 50 kg	Traders’ Weights
	Class F2 + mg	Class M1 + mg	Class M1-2 + mg	Class M2 + mg	Class M2-3+ mg
1000 kg		50 000	100 000	160 000	300 000
500 kg		25 000	50 000	80 000	160 000
200 kg		10 000	20 000	30 000	60 000
100 kg		5 000	10 000	16 000	30 000
50 kg	800	2500	5 000	8 000	16 000
20 kg	300	1000		3000
10 kg	160	500		1600
5 kg	80	250		800
2 kg	30	100		300
1 kg	16	50		160
500 g	8.0	25		80
200 g	3.0	10		30
100 g	1.6	5		16
50 g	1.0	3		10
20 g	0.8	2.5		8.0
10 g	0.6	2.0		6.0
5 g	0.5	1.6		5.0
2 g	0.4	1.2		4.0
1g	0.3	1.0		3.0
500 mg	0.25	0.8		2.5
200 mg	0.20	0.6		2.0
100 mg	0.16	0.5		1.6
50 mg	0.12	0.4
20 mg	0.10	0.3
10 mg	0.08	0.25
5 mg	0.06	0.20
2 mg	0.06	0.20
1 mg	0.06	0.20

Table 2: Specifications for weighing equipment for verification and certification of traders' weights

Note:

Column 1 lists the denominations of traders' weights.

The three sub-columns under Column 2 list the best measurement capability weighing equipment must meet for the combined value of discrimination and repeatability tests for each denomination of traders' weight listed in Column 1 for each class of traders’ weight.

Nominal value of traders weights	Best measurement capability on weighing instrument used to test traders’ weights (± mg )
	Class M₁	Class M₂	Class M₃
50 kg	500	1500	5000
20 kg	200	600	2000
10 kg	100	300	1000
5 kg	50	150	500
2 kg	20	60	200
1 kg	10	30	100
500 g	5	15	50
200 g	2	6	20
100 g	1	3	10
50 g	1	2	6
20 g	1	2	5
10 g	1	1	4
5 g	1	1	3
2 g	1	1	2
1g	1	1	2
500 mg		1
200 mg		1
100 mg		1
50 mg
20 mg
10 mg
5 mg
2 mg
1 mg

Table 3: Standards of volume - Schedule of maximum permissible errors - Metal contents measures

Nominal value of volume standards	Maximum permissible error (MPE) in excess or deficiency in millilitres (± ml ) working standard
2400 L	2400
2000 L	2000
1000 L	1000
500 L	500
400 L	400
220 L	110.0
200 L	100.0
50 L	50.0
20 L	20.0
10 L	10.0
5 L	5.0
2 L or 1 L	2.0
500 ml	1.0
200 ml	0.8
100 ml	0.4
50 ml	0.3
20 ml	0.2
10 ml, 5 ml	0.2
2 ml or 1 ml	0.1

Table 4: Glass contents and delivery measures - Graduated glass measure

Nominal capacity	Volume equivalent to one subdivision of scale	Maximum permissible error (MPE)
5 ml	0.1 ml	0.2 ml
10 ml	0.2 ml	0.2 ml
25 ml	0.5 ml	0.25 ml
50 ml	1.0 ml	0.5 ml
100 ml	1.0 ml	0.8 ml
500 ml	5.0 ml	2.0 ml
1000 ml	10.0 ml	4.0 ml
2000 ml	20.0 ml	8.0 ml

Table 5: Pipettes

Nominal capacity	Maximum permissible error (MPE) ± ml
1	0.1
2	0.1
5	0.2
10	0.2
25	0.2

Table 6: Burettes

Nominal capacity	Maximum permissible error (MPE) ± ml
10 millilitres	0.2
25 millilitres	0.2
50 millilitres	0.3
100 millilitres	0.4