Water Filter/Softener Air Gap with 1/2-inch Barb Connector for Installation on a 1-1/2-inch Standpipe with PVC Trap Adapters.

Plumb Pak PP855-69 Air Gap for Standpipes, Grey

Fleck 5600SXT 48,000 Grain Water Softener Digital SXT Metered Whole House System

JNW Direct Water Total Hardness Test Strips, Best Kit for Accurate Water Quality Testing to Determine Soft or Hard Water, 150 Strip MEGA Pack

Hach 145300 Total Hardness Test Kit, Model 5-B

Water Hardness Test Strips,Upgraded 100ct,0-425 mg/L, HoneForest Hard Water Test Kit, Testing Total Hardness of Water Softener, Drinking Water Quality, Pool Water,etc

Hach 2745250 Total Hardness Test Strips, 0-425 mg/L

ATP Vinyl-Flex PVC Food Grade Plastic Tubing, Clear, 1/2" ID x 5/8" OD, 100 feet Length

GAP CAP - Dual Space-Saving Air Gap Drain For 1 1/2" & 2" Standpipes

Drinking Water Test Kit 9 in 1 - Best Water Quality Test for Well Water and Tap Water - Determines pH - Lead - Total Hardness - Copper - Alkalinity & More - 100 Ct - Accurate Results in Seconds!

PEX Pipe Cutters for Cutting 1/8"-1" PEX Tubings, not for PVC Pipes