What are the rules on weights when individual package sizes vary?
If you are retailing packages that vary in size, you can choose to either sell by minimum quantity or by average quantity. If you sell by minimum quantity, every packet must contain at least that amount. If you are selling by average quantity, you must follow set rules: • The average quantity must be at least the amount you claim. • No more than 1 in 40 of the packs must be more than a specified ‘tolerable negative error’ (TNE) below the stated average. The TNE depends on the weight or size of the packages. • None of the packages must be more than twice the TNE below the stated average. In addition, if you sell by average quantity, you must carry out checks to ensure that you are complying with the rules, and keep records of the checks. You must also mark the packages with your name and address, and can choose to use the ‘e’ mark to show that you are complying with the rules.
