Keep It Fresh

Humidity control, curing jars and airtight containers — the gear that keeps what you store from drying out, and the meters that tell you whether it is working.

Two-way humidity packs hold a set relative humidity rather than only absorbing: 58% for something in weekly use, 62% for longer storage. They only work inside a container that genuinely seals, so the containers here are the ones that do. Silica gel is in this collection for gear, cases and freshly washed glass — it is a one-way desiccant and the wrong tool for anything you want held at a set humidity.

Sizing, replacement intervals and which containers hold an RH level are covered in Humidity Packs for Storage.