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All Containers›Shop by use case›Home bulk and dry goods›Getting started›Four terms, and a rule that does not reach youShop all bulk and dry goods →
Getting started

Four terms, and a rule that does not reach you

By Dwight Davis, Founder

On this page13
A food in package form. Which a pantry canister is not.

The requirement

The principal display panel of a food in package form shall bear a declaration of the net quantity of contents.

And four permitted terms

Weight, measure, numerical count, or a combination of numerical count and weight or measure.

Numerical count is the surprise

A quantity declared as a number of things rather than as an amount, which suits a bulk dry product sold by the piece.

But the choice is not free

Fluid measure for a liquid. Weight for a solid, semisolid or viscous food. Dry measure permitted for a fresh produce item customarily sold that way.

So the product decides the unit

Which is the opposite of how people usually think about it. The term is not a presentation choice.

And a food in package form means a package for sale

Which this group is not. Every leaf here is a household storing something it already owns.

So the section reaches almost nobody in this group

Nobody filling a flour canister is declaring a net quantity to anybody. Stated first, because the rest of the property quotes a rule that may not apply to the reader.

Why quote it at all

Because the units are defined in it, the gallon is 231 cubic inches, and a declared volume carries a temperature. Those are worth knowing.

And because the moment a jar is sold it changes

A household that starts selling jars of granola is in package form, and the four terms and the unit rules arrive together.

The mass against volume gap is elsewhere

A solid is declared by weight and our capacity field is a volume. The specialty supplements property works that through and this one points at it.

What this property has instead is the mouth

14 of the 29 containers are on a finish of 110 mm or wider and 8 more close with a lid across their full diameter.

Which makes it the widest-mouth shelf in the library

And that is the right answer for a canister you reach into rather than pour from.

References

21 CFR 101.7(a): "The principal display panel of a food in package form shall bear a declaration of the net quantity of contents." The declaration may be expressed in weight, measure, numerical count, or a combination of numerical count and weight or measure, and the choice is governed: fluid measure for a liquid, weight for a solid, semisolid or viscous food, with dry measure permitted for a fresh produce item customarily sold that way. The section reaches a food in package form, meaning a package for sale. law.cornell.edu
21 CFR 101.7(b): "Statements of weight shall be in terms of avoirdupois pound and ounce." And "Statements of fluid measure shall be in terms of the U.S. gallon of 231 cubic inches and quart, pint, and fluid ounce subdivisions thereof". Paragraph (b)(2) sets the temperature at which a volume is expressed: for a frozen food, "express the volume at the frozen temperature"; for a refrigerated food, "express the volume at 40 degrees F (4 degrees C)"; for other foods, "express the volume at 68 degrees F (20 degrees C)". law.cornell.edu
The Davis Pack Supply catalog, measured 19 October 2026. Of the 29 containers in this group, 9 are on a 110-400 finish and 5 on 120TT, so 14 are on a finish of 110 mm or wider, and a further 8 have no neck finish recorded because they are tubs and pails that close with a lid across their full diameter. The home coffee, tea and spice shelf next door has 70-400 as its commonest finish, on 54 of 205 containers.
Written from 21 CFR 101.7 and from the catalog as it stood on 19 October 2026. That section reaches a food in package form, meaning a package for sale, so almost none of it reaches somebody filling a pantry canister; it is quoted because the four permitted terms and the 231 cubic inch gallon are worth knowing and because it shows what changes when a jar is sold rather than filled. The mass against volume gap is set out in the specialty supplements property. Nothing here addresses net quantity formatting, type size, placement, metric declarations, or state weights and measures law.