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Toiletry decanting
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Toiletry decanting

Two rules, two numbers

By Dwight Davis, Founder

Updated

On this page6
Federal hazmat law caps a medicinal or toilet article at 500 mL per container and 2 liters per person in baggage. TSA caps carry-on liquids far lower as a security matter. A travel bottle has to satisfy both, and then it has to stay closed while the cabin pressure drops.

Getting started

Before you decant anything.
Is this for you at allBefore you decant

The two rules

Hazmat, security, and which binds.
The hazmat limitThe security limitWhat the other two leaves bring

Pressure

Why it leaks at altitude and not at home.
Why it leaks at altitudeClosures for pressure

What goes wrong

Named failures, with the cause for each.
It leaked in the wash bagThe bottle was too bigDo not decant contact lens solutionThe material was wrong for the contents

Containers

203 bottles, 127 of them under 100 mL.
What we actually stock for thisSizes, and which limit binds

Tools and directories

Things to use rather than read.
The check, before you sell a travel set
Written from 49 CFR 175.10 and measured catalog data. Every page names its source.