http://www.legislation.gov.uk/id/nisr/2006/5

PART IVTESTING

Testing by use of weights or testing equipment34

1

Every non-automatic weighing machine, where the maximum load does not exceed 5 tonnes, shall be tested by the use of weights as set out in the following Table—

Accuracy Classification	Weights to be used
Class I and Class II	Northern Ireland local standard weights, Northern Ireland working standard weights which fall within the prescribed limits of error relating to the equivalent local standard weights, Northern Ireland test weights not greater than 20 kilograms which fall within the prescribed limits of error relating to the equivalent local standard weights or test weights greater than 20 kilograms which fall within 0.15 of the prescribed limits of error for the test weights in question
Class III and having more than 5,000 scale intervals	Northern Ireland local standard weights, Northern Ireland working standard weights, Northern Ireland test weights not greater than 20 kilograms, or test weights greater than 20 kilograms which fall within half the prescribed limits of error for the test weights in question
Class III and having no more than 5,000 scale intervals and Class IIII	Northern Ireland local standard weights, Northern Ireland working standard weights or Northern Ireland test weights

Accuracy Classification

Weights to be used

Class I and Class II

Northern Ireland local standard weights, Northern Ireland working standard weights which fall within the prescribed limits of error relating to the equivalent local standard weights, Northern Ireland test weights not greater than 20 kilograms which fall within the prescribed limits of error relating to the equivalent local standard weights or test weights greater than 20 kilograms which fall within 0.15 of the prescribed limits of error for the test weights in question

Class III and having more than 5,000

scale intervals

Northern Ireland local standard weights, Northern Ireland working standard weights, Northern Ireland test weights not greater than 20 kilograms, or test weights greater than 20 kilograms which fall within half the prescribed limits of error for the test weights in question

Class III and having no more than

5,000 scale intervals and Class IIII

Northern Ireland local standard weights, Northern Ireland working standard weights or Northern Ireland test weights

2

Where the maximum load of a machine exceeds 5 tonnes, the test loads shall consist of a minimum of 5 tonnes of weights as set out in the Table in paragraph (1) and may consist of loose material for the remainder up to the maximum load.

3

In this regulation “Northern Ireland local standard weights”, “Northern Ireland working standard weights” and “Northern Ireland test weights” shall be construed in accordance with the 1981 Order.