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roll is ideal for covering larger areas or for multiple uses across different grow room setups
not the gush a coarse emitter puts out
Magnesium Sulfate
ETL Certified for Lab use
Replacement Electrode for Hanna Checker pH Tester (HI 98103) Optic Foliar Nutrients roll is ideal for coveringAt the cost of just a few rolls of litmus paper, you can have the industry's best pocket size pH tester. The Checker supplies you with fast and accurate readings from 0. 00 to 14. 00 pH with a resolution of 0. 01 pH. This compact tester features a large easy to read LCD and a simple to perform 2 point calibration. The pH electrode of the Checker can be replaced; simply unscrew the electrode from the meter body and screw on a new one. The Checker is
