Hanna (HI7036L) 12.41 ppt (g-L) 1 x 500 mL bottle Pentek (158095) Filter Housing O-Rings 237 FOR 5" & SL HOUSING; VITON 💧 Pro Tip: Phosphate filters

💧 Pro Tip: Phosphate filters are most effective when installed before appliances with heating elements

This Pentek 237 Viton o-ring fits all standard 5-inch Pentair and Pentek filter housings plus SL series slimline units

Corrosion-resistant

This fail-safe device features a 1/2" MIP connection and signals water quality issues with a simple neon lamp indicator that turns off when conductivity rises above threshold

or mineral buildup cannot be cleaned with vinegar solution

Hanna (HI7036L) 12.41 ppt (g-L) 1 x 500 mL bottle Pentek (158095) Filter Housing O-Rings 237 FOR 5" & SL HOUSING; VITON 💧 Pro Tip: Phosphate filtersThe Hanna HI7036L delivers laboratory grade TDS calibration solution at 12. 41 ppt (12. 41 g L), formulated with high purity potassium chloride and certified against NIST standards. This 500 mL bottle provides reliable reference material for accurate calibration of conductivity and TDS meters in lab and field environments. SPECIFICATIONS Technical Details Model Number HI7036L Concentration 12. 41 ppt (12. 41 g L) Solution Type Potassium Chloride (KCl)