What goes wrong

The size was chosen before the reference amount

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A size was chosen on fill and appearance And landed under 200 percent Or landed in the 200 to 300 percent band The reference amount was assumed rather than read A volume was used where the table asks for mass And a fill weight was estimated rather than weighed The container was rounded up to clear the line A carbonated drink went into a jar A light-sensitive product went into clear glass The label area was not checked against the band A size was changed late in the run And a plain lid was matched to a cannabis product References

The jar was picked on fit. The band came as a surprise.

A size was chosen on fill and appearance

Which is how most packaging decisions are made and is usually right. Here it decides what the label may declare.

And landed under 200 percent

So the entire content had to be labeled as one serving, which was not the product that was designed.

Or landed in the 200 to 300 percent band

Which requires dual-column labeling, and a dual column needs label area that a small jar does not have.

The reference amount was assumed rather than read

Syrups are 30 mL for all syrups. Honey is 1 tbsp. Those are a factor of two apart and both are liquids in jars.

A volume was used where the table asks for mass

Candies, cookies and brownies are referenced in grams. A jar capacity in millilitres does not answer the question for any of them.

And a fill weight was estimated rather than weighed

Which is one measurement away from being known. An estimate that lands near the threshold is worse than no estimate.

The container was rounded up to clear the line

A 2 oz bottle is 59 mL and the threshold is 60. Calling it 60 is inventing a value, which is the failure this catalog exists to avoid.

A carbonated drink went into a jar

Nothing in this group is a pressure-rated format and the closures are continuous thread lids. Still beverages only.

A light-sensitive product went into clear glass

19 clear containers here against 8 amber and 4 frosted, on a shelf the archetype flags as light sensitive. Clear is available and it is not the default to reach for.

The label area was not checked against the band

A dual column needs room for two sets of numbers, and the jars in the 200 to 300 percent band are not the large ones. The band and the available panel are decided by the same choice.

A size was changed late in the run

Which is the expensive version. The artwork was drawn for one band, the container moved one size, and the band moved with it.

And a plain lid was matched to a cannabis product

14 of 260 closures here are child resistant. What a licensed product requires is a state question, and a plain lid has answered it by default.

References

21 CFR 101.9(b)(6): "A product that is packaged and sold individually that contains less than 200 percent of the applicable reference amount must be considered to be a single-serving container, and the entire content of the product must be labeled as one serving." The same paragraph permits voluntary dual-column labeling for a product holding 150 to 200 percent of the reference amount. law.cornell.edu

21 CFR 101.12(b), Reference Amounts Customarily Consumed Per Eating Occasion. The amounts that reach this shelf: hard candies and breath mints 2 g; all other candies 30 g; cookies 30 g; brownies 40 g; syrups "30 mL for all syrups"; honey, jams, jellies, fruit butter, molasses, fruit pastes and fruit chutneys 1 tbsp; carbonated and noncarbonated beverages, wine coolers and water 360 mL. law.cornell.edu

The Davis Pack Supply catalog, measured 19 October 2026. The edibles shelf is 357 rows: 97 containers and 260 closures. 30 to 473 mL with a median of 177, every container with a capacity on file. 22 under 60 mL, 2 between 60 and 90, 73 over 90. By count: 23 at 237 mL, 21 at 118, 17 at 59, 13 at 473, 6 at 177, 6 at 355, 3 at 30. 66 PP and 31 glass, with no PET, HDPE or metal. 78 jars, 12 tubs and pails, 6 bottles, 1 tube. 29 white, 24 natural, 19 clear, 11 black, 8 amber, 4 frosted, 2 blue. Closures: 164 continuous thread polypropylene lids, 39 metal or aluminum CT caps, 22 dome lids, 14 child resistant, 9 sealing discs, 6 round tub lids, 3 phenolic, 2 metal overshell lids.

Written from 21 CFR 101.9 and 101.12 and from the catalog as it stood on 19 October 2026. The serving-size rules quoted here are the federal food-labeling rules; dose caps, potency labeling, child-resistant packaging and exit packaging for a licensed cannabis edible are set state by state and nothing here describes them. Four of the reference amounts that matter on this shelf are expressed in grams and our capacity field is in millilitres, so for gummies, chocolate and baked goods our data cannot tell you which band a jar falls in.