Water Quality & pH

Showing all 9 results

• 

  Active Air 2-Way Moisture/pH Meter

  $11.84
• 

  Active Air 3-Way Meter

  $13.09
• 

  GroStar pH calibration kit (pH 4/7, 8 oz. each)

  $18.99
• 

  HM Digital 1000 ppm TDS Calibration Solution, 3 oz (90 ml)

  $10.99
• 

  HM Digital COM-80 EC/TDS/Temp Waterproof Hydro Tester

  $52.99
• 

  HM Digital PH-80 pH/Temperature Meter

  $47.99
• 

  HM Digital PH-STOR pH Electrode Storage Solution

  $8.99
• 

  Microbe Life Hydroponics pH DOWN, 1 qt

  $19.99
• 

  Microbe Life Hydroponics pH UP, 1 qt

  $19.99