Hanna pH 7.01 Calibration Solution, 20 ml, case of 25 pots-and-containers Wood's Rooting Compound

Wood's Rooting Compound

For hydroponics use 2 teaspoons of mycorrhizal fungi for every 10 gallons of tank reservoir

allowing extremely quiet operation

The meter features a backlit display for clear readings in the darkest environments

Hanna pH 7.01 Calibration Solution, 20 ml, case of 25 pots-and-containers Wood's Rooting CompoundpH 7 is the most frequently used pH buffer. All Hanna solution bottles come with a pH vs. temperature chart together with the production lot # and expiration date to guarantee maximum accuracy. Formulation Hanna pH buffers are made of potassium dihydrogen phosphate and disodium hydrogen phosphate and are standardized with a pH meter calibrated to NIST primary standard buffer solutions (NIST 186Ie & 186IIe and NIST 158g S. R. M.).