Test Strips Aquachek Pro II Swimming Pool Spa 4 in 1 Test Strips 4-Way TDS
$10.35
AquaChek Pro II 4-Way test strips 25 Strips
Takes about 15-30 seconds to show results
Test for: High Range Hardness, Low Range Hardness, Cyanuric Acid, Total Dissolved Solids (TDS)
Instructions and chart on the back of the bottle