Bluelab pH 4.0 Calibration Solution 500 ml
"pH measuring equipment must be cleaned and calibrated regularly to ensure they are giving the user accurate readings. pH instruments are calibrated to pH 7.0 first (buffer) then to pH 4.0 (slope). Calibratio
- Water and Aeration
- Growing Environment
-
Lighting
- LED
- Commercial Lighting Fixtures
- Gavita
- LEC/CMH Lighting
- Sun System DE Reflectors
- Sun System SE Reflectors
- Sun System Electronic Ballasts
- Electronic Ballasts
- Sun System Magnetic Ballasts
- Magnetic Ballasts
- Lamps
- Fluorescent Lighting
- Complete Systems
- Lighting & Electrical Components
- Extension, Power & Lamp Cords
- Light Movers Hangers
- Plant Propagation Nutrition and Health
- Growing Media and Containers
- Growing Tents Systems and Trays
- Tools, Accessories and More
- Glass Accessories