Bluelab® pH 4.0 Calibration Solution (250 mL) pH Probe Storage Solutions RHP certified for consistency

RHP certified for consistency

Professional grade

in higher concentrations

Ideal for use throughout the growing season

Hydrogen peroxide is a chemical compound with the formula H2O2

Bluelab® pH 4.0 Calibration Solution (250 mL) pH Probe Storage Solutions RHP certified for consistencyBluelab pH 4. 0 Calibration Solution (250 mL) The Bluelab pH 4. 0 Calibration Solution is essential for use with all Bluelab pH products for the calibration of Bluelab pH Probes. pH instruments must be cleaned and calibrated at least monthly to provide you with the most accurate reading. pH measuring equipment is calibrated to pH 7. 0 first (buffer) then to pH 4. 0 (slope). To ensure solutions remain accurate: Avoid cross contamination Decanter into a