A model law, not a federal one
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What Handbook 130 is
A compilation of model laws and regulations, published by NIST, written so that states can adopt a common text rather than fifty different ones.
How much of it binds you
In NIST's own words the models "are adopted in various forms by many state, local, and some federal weights and measures authorities. Some authorities adopt the current versions as written; some use them as the basis of adoption, but from an earlier year; some use them as a guideline only; some elect to use their own laws or regulations; and some have no corresponding law or regulation."
Which is four different situations in one sentence
Current text, older text, guideline only, own law, or nothing. You cannot know which applies to you without looking at your own state.
So this property quotes the model
Because it is the best available statement of what the rule probably is, and because the principle underneath it is not controversial anywhere: a buyer does not pay for the container.
And it does not tell you that you are compliant
That requires the text your state adopted, and often a conversation with the county or state weights and measures official who will eventually visit.
Those officials are worth meeting early
They inspect scales and pricing, they are generally helpful to somebody who asks before opening rather than after a complaint, and they will tell you exactly which edition your state is on.
The device side is separate
Whether a scale may be used in trade is Handbook 44 and a state device approval, with its own sealing and inspection regime. Nothing in this property answers it.
And the food side is separate again
Refilling a customer's food container is a retail food question under whoever licenses the shop. The FDA Food Code is itself a model code adopted state by state.
Three different regimes meet at one counter
Weights and measures for the quantity, device approval for the scale, retail food for the hygiene. This property is about the first, and it says so rather than blurring them.
What a container supplier can actually tell you
What a container weighs, what it is made of and what it holds. The first of those is the one this craft needs most and the one nobody asks for.