Default sorting Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low View: 12 24 All Quick View Quick View Meters & SolutionsGeneral Hydroponics pH Test Kit – 1oz $7.54 General Hydroponics pH Test Kit - 1oz Quick View Quick View Meters & SolutionspH Indicator Solution Test Kit $5.95 Sure Test pH Indicator Solution Test Kit