Test Strips 4 in 1 – Aquacheck (50 of)

Comes in a pack of 50. Tests for free chlorine, pH, Total Alkalinity (Alkaline Salts) & Stabiliser. Can be used for a pool or spa, (if you’re using chlorine as the sanitizer). These strips are the best as they test for the all important FREE chlorine plus you can also test for stabiliser levels.