The products

Culture media

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What it is Which is a bottle craft And autoclaving is the whole requirement Which our catalog cannot confirm for any product So the relevant shelf is narrower than it looks Glass is the traditional answer Thermal shock is the glass failure The closure has to survive it too Light matters for some media And label with the date it was made References

Made up in bulk, autoclaved, poured. A laboratory consumable rather than a specimen.

What it is

Agar or broth made up from powder, sterilised, and either stored as bulk liquid or poured into plates. A laboratory making its own rather than buying prepared plates.

Which is a bottle craft

Bulk media lives in bottles: made up, autoclaved in the bottle, held molten or stored, then poured. 246 bottles on this shelf.

And autoclaving is the whole requirement

The archetype says it: "autoclavability and chemical resistance". Media is sterilised in the vessel it is stored in, which makes the vessel part of the sterilisation.

Which our catalog cannot confirm for any product

We do not record autoclavability. Of the materials here, glass is generally autoclavable and polypropylene is the polyolefin normally specified for it; HDPE is not the material chosen for that duty.

So the relevant shelf is narrower than it looks

103 glass containers and 13 polypropylene. The 154 HDPE containers, which are the largest group here, are not candidates for autoclaving.

Glass is the traditional answer

77 glass Boston rounds. Inert, autoclavable, inspectable, and it lets you see whether the media has set, gone cloudy or grown something it should not have.

Thermal shock is the glass failure

Molten agar into a cold bottle, or a hot bottle onto a cold bench. Media work runs between autoclave temperature and a 50 degree water bath, and the vessel takes that cycle repeatedly.

The closure has to survive it too

A cap autoclaved with the bottle, loosened for the cycle and tightened after. Liners deform and a cap that no longer seals is a bottle of media that dries or contaminates.

Light matters for some media

28 amber containers. Several components are light sensitive and a stored bottle on a bench by a window is a slow degradation nobody attributes to the light.

And label with the date it was made

Media has a usable life, and a bottle of something clear with no date is a bottle somebody will either waste or, worse, use.

References

The archetype behind this shelf is ind-lab: 10 to 1,000 mL, narrow mouth, glass and HDPE, cold fill, thin, aqueous, with "reagent or sample, autoclavability and chemical resistance" as its stated reason. The capacity window fits. Autoclavability is the word that matters most for this craft and our catalog does not record it for any product.

The Davis Pack Supply catalog, measured 19 October 2026. The diagnostics and lab shelf is 600 rows: 270 containers and 330 closures. 5 mL to 946 mL with a median of 118; 71 containers at 30 mL or under, 105 at 60 or under, 154 at 120 or under, 248 at 500 or under. 154 HDPE, 103 glass, 13 PP, and no PET. 246 bottles, 19 jars, 3 jugs, 2 tubes. 97 white, 57 natural, 35 clear, 28 amber. Closures: 163 continuous thread, 44 child resistant, 32 dropper assemblies, 27 spouted, 19 flip top, 14 phenolic, 7 buttress, 6 specialty, 5 dome lids.

Written from 49 CFR 173.199 and 173.134, and from the catalog as it stood on 19 October 2026. Nothing here is offered as a compliant primary receptacle for a regulated shipment: the pressure and drop requirements attach to a tested assembly, not to a bottle. Category A infectious substances are a different packaging instruction entirely and are not summarized. Sterility is not claimed for any product, and what a laboratory will accept is the laboratory's to say.