General Hydroponics pH Control Kit w/Up & Down | 8 oz Each

General Hydroponics pH Control Kit w/Up & Down | 8 oz each General Hydroponics pH Control Kit makes pH testing easy. This package includes a GH pH Test Kit, a 8oz bottle of Liquid pH Up and a 8oz bottle of Liquid pH Down. Simply fill the...

General Hydroponics pH Test Kit for Liquid

General Hydroponics pH Test Kit for Liquid General Hydroponics pH Test Kits make pH testing easy. Simply fill a test-tube halfway with nutrient, add a few drops of pH Test Indicator, and observe the coloration of the liquid in the test vial. Use 3...

pH Test Kit for Soil

Rapitest pH Test Kits make pH testing of soil easy. Simply fill a test indicator with a little soil and water, add one green pH test capsule and shake. Then observe the coloration of the liquid in the test indicator versus the included color chart. This...

Soil Test Kit for N/P/K/pH

Rapitest Soil Test Kits make Nitrogen, Phosphorus, Potassium and pH testing of soil easy. Simply fill a test indicator with a little soil and water, add one test capsule and shake. Then observe the coloration of the liquid in the test indicator versus...

General Hydroponics® pH Test Kit | 8oz

General Hydroponics® pH Test Kit | 8oz General Hydroponics® pH Test Kits make pH testing easy. Simply fill a test-tube halfway with nutrient/feed solution, add a few drops of pH Test Indicator and observe the coloration of the liquid in the test...

Bluelab pH/TDS Probe Care Kit

The instrument is only as accurate as the probe is clean. Probe cleaning is one of the most important parts of owning or operating any Bluelab meter, monitor or controller. The probe surface is where the instrument takes the reading of the solution. If...