Insta-TEST PRO Phosphate Test Strips High Range Valve Tool-Free Installation – Replaces original

Tool-Free Installation – Replaces original clips quickly with no special tools required

Powerful Oxidizing Action – Destroys chloramines

Compact size that fits easily in service trucks

Using complementary products helps maintain optimal spa water chemistry and performance

Heater damage from backflow

Insta-TEST PRO Phosphate Test Strips High Range Valve Tool-Free Installation – Replaces originalInsta TEST PRO Phosphate High Range Test Strips are designed to measure elevated phosphate levels in pool and spa water where algae pressure, recurring cloudiness, or chlorine demand issues are present. These professional grade strips provide fast, reliable readings at higher concentrations commonly found in problem pools or pools that have not been treated for phosphates. Phosphates act as a primary nutrient source for algae. When levels rise