Most chemicals do not have a shelf life as long as they are kept in dry storage and a temperature range above freezing. Liquid chemical products that freeze-up and granular products that become hardened should be disposed of. Test Strips, unlike chemicals, do have a shelf life and they should have an expiration date printed on the bottle. They also can be damaged by being exposed to moisture and extreme heat conditions.
Do Most Spa Chemical Products have a shelf life?
