MuswellMetro
Queen Bee
As for many of the leaflets, it has no indication where the legislation is that covers particular rules. That is not good. Reading it you have no idea what legislation might have been amended. And there is no distinction between what is legislation, what is interpretation and what is merely unqualified opinion or hearsay.
A question that came up before, it's not the only 'guide' that asserts this 'rule'. It's what makes these documents so annoying; how do you know any of the rules have anything behind them other than repetition? I looked into what was available in the published legislation and official government department guidance. There is nothing I could see that specifies you need a gap between the number and the unit symbol. This is the trail as I found it:
The basic legislation for all goods is the "Weights and Measures Act 1985".
http://www.legislation.gov.uk/ukpga/1985/72/enacted
"The Weights and Measures (Quantity Marking and Abbreviations of Units) Regulations 1987" http://www.legislation.gov.uk/uksi/1987/1538/contents/made was where the specification of size and format on labelling was first set down.
I have seen qualified honey show judges assert that other items have minimum sizes when awarding the label category. As most probably know, they don't, the only size specified is for the weight. Minimum 4 mm high for packages exceeding 200 g to 1 kg, 3 mm exceeding 50 g to 200 g, 2 mm for not exceeding 50g.
These rules were amended and carried forward by the "The Weights and Measures (Packaged Goods) Regulations 2006" http://www.legislation.gov.uk/uksi/2006/659/made This is where the current rules are laid down about which units and abbreviations are allowed. For weight of honey, for instance, the permitted units are kg for kilograms or g for grams. The quantity must be numeric and the units written in full or with the permitted abbreviation. It can be written as 500 g or 500 grams. Not five hundred grams. No other abbreviations such as “gr" or "gm". No derived units other than grams and kilograms such as decagrams.
A space between the number and the unit is the format used in all the official legislation and examples in the notes. A space is part of the scientific SI standard. However. If there is any mention of requiring a space on labels in the current legislation or official guidance notes, I can't see it. It's just not referred to.
Look for practical examples. He1nz baked beans have no gap between the number and the 'g'. If there is a single branded and packaged product that sells in greater numbers in the UK than He1nz baked beans, I can't think what it would be. On the other hand their soup cans have a gap. No distinction, rhyme or reason. So no, you don't need a gap because if it was ever specified in some obscure corner of legislation it is obsolete. Or it might as well be because it's not in the working set of legislation Trading Standards enforce.
Another specific rule in many many 'guides' that has been overtaken is that the weight has to be certain specific quantities, 454 g for instance. That was abolished in "The Weights and Measures (Specified Quantities) (Pre-packed Products) Regulations 2009" www.legislation.gov.uk/uksi/2009/663/made Your package can be any weight as long it is legibly labelled in the prescribed way.
You did ask.
thanks
at least as a Physicists, i appreciate the thoroughness of the answer from a Chemist, like you i always try to go back to first principles...and you have got further than i did
i have posted the same request on the new BBKA exam section of their forum, lets see what Mr Paterson comes up with, it is their document
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