Skip to content
Purity
Book a demo

Change your minimum purity and shelf life

Set the purity a batch must meet and how long a lab report stays valid.

Owners · Updated September 24, 2026

The COA library and release rules screen in Purity, with example data
The COA library and release rules screen, with example data.

These two numbers drive every release decision across your inventory.

  1. Open Release rules.
  2. Set "Minimum purity (%)". A batch below this goes on hold.
  3. Set "A COA stays valid for (months)". This is used when the lab doesn't give a retest date.
  4. Click "Save rules".

Changing these re-checks every batch right away, so a change can move batches between quarantine, on hold and released immediately. Only the owner can change release rules.