What goes wrong

The range was read as a permission

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A 240 F ceiling was read as microwave safe And a 300 F ceiling as oven safe A dishwasher was assumed from the same number The 120 F group was overlooked So the commonest container here was bought for reheating The 0 F floor was read as comfortable And the two 300 F containers were assumed to be representative The catalog was not checked Which the vape and pet grooming properties found elsewhere Material and rating were read separately And thermal shock was ignored Read the range to eliminate, then ask References

240 F is a candidate, not an answer.

A 240 F ceiling was read as microwave safe

It is a tolerance. A microwave heats unevenly and the food gets hotter than the air, so a local hot spot can exceed the rating.

And a 300 F ceiling as oven safe

Also a tolerance. Only a manufacturer makes an oven safe claim and we publish no such claim on any product.

A dishwasher was assumed from the same number

A dishwasher is hot, wet and chemical at once. A temperature range addresses one of those three.

The 120 F group was overlooked

109 of 176 containers, which is 62 percent of the shelf, and 120 F is below a hot dishwasher.

So the commonest container here was bought for reheating

Which is the single likeliest error on this shelf, because PET is the commonest material and clear is the commonest color.

The 0 F floor was read as comfortable

45 containers at 0 to 240 F, and 0 F is a domestic freezer temperature exactly. A freezer running cold is below the rating.

And the two 300 F containers were assumed to be representative

They are 2 of 176. The whole both-ends offering on this shelf.

The catalog was not checked

The field takes nine values catalog-wide, so there may be more -100 to 300 F containers that are not indexed to this group.

Which the vape and pet grooming properties found elsewhere

Parts in the catalog and not routed to the group that needed them. Worth asking.

Material and rating were read separately

They agree here: 109 PET at a 120 F ceiling and the polypropylene group at 240. A disagreement between them on a product page is a reason to ask.

And thermal shock was ignored

A rating is a steady-state range. Moving a container from a freezer straight into hot water is a rate problem rather than a temperature one.

Read the range to eliminate, then ask

Which is the same conclusion the compounding property reaches about our chemical resistance rating.

References

The Davis Pack Supply catalog, measured 19 October 2026. A temperature range specification is published on all 176 containers in this group and takes exactly four values: -40 to 120 F on 109 containers, 0 to 240 F on 45, -100 to 190 F on 20, and -100 to 300 F on 2. So 109 of 176 top out at 120 F. The cold-tolerant groups stop at 120 or 190 F and the heat-tolerant group bottoms out at 0 F, so only the 2 containers rated -100 to 300 F span both a freezer and an oven. Catalog-wide the field takes nine values. A temperature range is not a statement that a container is microwave, dishwasher or oven safe; only a manufacturer can make those.

The Davis Pack Supply catalog, measured 19 October 2026. 421 rows: 176 containers and 245 closures. 125 to 7,571 mL with a median of 473. 109 PET, 45 PP, 20 HDPE and 2 glass. 129 jars, 24 tubs and pails, 23 bottles. 83 PET single wall jars, 18 PP single wall jars, 16 PP round tubs, 6 double wall round base jars, and 5 each of plastic square grip containers, double wall straight base jars, PE wide mouth containers and PET packer bottles. 52 clear, 44 white, 24 natural, 20 amber, 16 black, 11 blue, 7 green, 1 dark amber. Necks: 75 at 89-400, 31 at 70-400, 25 unrecorded, 9 at 110-400, 7 at 53-400, 5 at 120TT, 4 at 120-400, 3 at 100-400. Closures: 174 continuous thread polypropylene lids, 29 metal or aluminum CT caps, 16 dome lids, 11 round tub lids, 5 sealing discs, 3 plastic round pail lids, 2 phenolic, 1 plug seal lid, 1 metal lug or twist cap, 1 tamper evident lid. Buyability, a snapshot: 105 of 176 available, 71 not; 72 quote only; 18 full case only, with case packs from 16 to 3,150 and a median of 208.

Written from 21 CFR 107.20(c) and from the catalog as it stood on 19 October 2026. Nothing here says what other federal date labeling requirements exist, how long any leftover keeps, or whether any container is microwave, dishwasher or oven safe: a published temperature range is not one of those statements and only a manufacturer can make them. The temperature range field is published on all 176 containers in this group and takes four values, of which only one, on two containers, spans a freezer and an oven.