Meters and Solutions

CES pH Upâ„¢Concentrated pH adjustment liquid, alkaline buffer raises water and nutrient solution pH. Highly concentrated, use conservatively. Slowly add to pure water or nutrient solution, at small intervals. Note beginning r

CES pH Downâ„¢Concentrated pH adjustment liquid, acidic buffer lowers water and nutrient solution pH. Highly concentrated, use conservatively. Slowly add to pure water or nutrient solution, at small intervals. Note b

CES pH Downâ„¢Concentrated pH adjustment liquid, acidic buffer lowers water and nutrient solution pH. Highly concentrated, use conservatively. Slowly add to pure water or nutrient solution, at small intervals. Note b

GroStar by Apera EC Calibration Kit (2.77 EC, 8 oz. each)• 2.77 EC conductivity standard calibration solution• Used as a reference or checking solution to ensure you have adequately cleaned the EC/ppm probe• Ca

All-in-one maintanence kit provides everything you need to maintain, clean and store your GroStar pH probeKit Includes: 3M KCL storage solution (4oz.)Clea

GroStar by Apera pH calibration kit (pH 4/7/10, 8 oz. each)Kit Includes:(1) pH 4.0 calibration solution 8 oz.(1) pH 7.0 calibration solution 8 oz.(1) pH 10.0 calibration solution 8 oz.pH measuring equipment must be cleaned and calibrated regularly to...

GroStar by Apera pH calibration kit (pH 4/7, 8 oz. each)Kit includes: (1) 8 oz. pH 4.0 calibration solution (1) 8 oz. pH 7.0 calibration solution pH measuring equipment must be cleaned and calibrated regularly to ensure accurate readings.High accuracy...

AI58040 - GroStar GS4-E replacement pH/EC combo electrode• Measures pH, conductivity (EC and PPM) and temperature• Combo probe built with lithium glass membrane and titanium alloy to ensure high accuracy and durabilit

AI58030 - GroStar GS3-E replacement EC electrode• Measures conductivity EC, PPM (500), PPM (700) and temperature• Premium probe technologies and materials ensure high accuracy and durability with minimal maintenance

AI58020 - GroStar GS2-E replacement Soil Spear pH electrode• Spear pH Probe measures pH and temperature in nutrient solution, soil, coco coir, rockwool, and many other media types• Premium probe technologies and mater

AI58010 - GroStar GS1-E replacement pH electrode• Replacement GS1 probe measures pH and temperature• Premium probe technologies and materials ensure high accuracy and durability with minimal maintenance•

AI31020 - GroStar GS2 Soil pH PenLab grade instruments designed specifically for growers!Includes: • 2-year warranty (instrument)• 1-year warranty (probe)• pH 7 & pH 4 solution (50ml bottles of e