The products

Water treatment

On this page11

What the leaf covers Which is a pesticide, not a device So the label carries a registration number The janitorial property covers repackaging What the container has to do Which points at glass or a resistant liner Amber for the ones that care about light Child resistant packaging is on the FIFRA list Two-part systems need two containers Which is why we say nothing about efficacy References

No performance numbers on this page. Deliberately.

What the leaf covers

A chemical treatment carried in a small container: a halogen solution, a two-part chlorine dioxide, or tablets decanted from a bulk pack into something smaller.

Which is a pesticide, not a device

A substance intended to destroy a pest is a pesticide and has to be registered. The filter is the device; the chemical is the pesticide.

So the label carries a registration number

And an establishment number. If you are repackaging a treatment chemical into your own container, the labeling obligations are yours, and FIFRA misbranding is the relevant risk.

The janitorial property covers repackaging

The refillable container provisions and the conditions under which a pesticide may be repackaged are set out there and not repeated here.

What the container has to do

Resist a halogen, which attacks many things, and stay sealed under pressure change. Iodine stains and chlorine dioxide is an oxidizer, and both are hard on liners.

Which points at glass or a resistant liner

50 glass containers on this shelf and 9 phenolic closures. For a halogen solution those two are the serious combination, with glass in a pack as the obvious objection.

Amber for the ones that care about light

52 amber containers. Several treatment chemicals degrade in light and a clear bottle on the outside of a pack is a bad place for them.

Child resistant packaging is on the FIFRA list

Section 25(c)(3), and it survives the device exemption. 18 child resistant closures here, which is the relevant set for a treatment chemical kept at home between trips.

Two-part systems need two containers

And a way to not confuse them. Two identical bottles with handwritten labels is how a two-part treatment gets mixed wrong at a stream at dusk.

Which is why we say nothing about efficacy

The numbers people cite for filters and purifiers come from a guide standard rather than a rule. A catalog printing them would be lending authority it does not have to a claim somebody drinks on.

References

40 CFR 152.500. A device is "any instrument or contrivance (other than a firearm) intended for trapping, destroying, repelling, or mitigating any pest", excluding equipment used for the application of a pesticide when sold separately. Devices are not required to be registered under FIFRA section 3, but remain subject to FIFRA sec. 2(q)(1) and 40 CFR part 156 for labeling; "FIFRA sec. 7 and part 167 of this chapter, with respect to establishment registration and reporting"; "FIFRA sec. 8 and part 169 of this chapter, with respect to books and records"; "FIFRA sec. 17, with respect to import and export of devices"; and to FIFRA sec. 9 inspection, sec. 12, 13 and 14 enforcement, sec. 25(c)(3) child resistant packaging and sec. 25(c)(4). law.cornell.edu

The Davis Pack Supply catalog, measured 18 October 2026. The camping and backpacking shelf is 979 rows: 453 containers and 526 closures. 15 mL to 500 mL with a median of 177; 8 containers at 15 mL or under, 27 at 30 or under, 86 at 60 or under, 189 at 120 or under, 394 at a pint or under. 201 PET, 126 HDPE, 76 PP, 50 glass. 221 bottles, 218 jars, 12 tubs and pails, 1 jug, 1 tube. 134 white, 114 clear, 66 natural, 52 amber. Closures: 369 continuous thread, 26 dome lids, 26 spouted, 19 flip top, 19 lug and twist, 18 child resistant, 11 liners and sealing discs, 9 phenolic, 7 spice caps, 7 buttress, 6 round tubs, and no disc tops, lotion pumps or fine mist sprayers.

Written from 40 CFR 152.500 and from the catalog as it stood on 18 October 2026. No log-reduction performance figures appear anywhere in this property, because the commonly cited numbers come from an EPA guide standard rather than a codified rule. Forest and park food storage orders are issued locally and are not summarized. Nothing here is a fuel bottle or a bear-resistant container.