Bluelab pH 4.0 Calibration Solution- 250ml Emerald Harvest range Langbeinite

Langbeinite

We recommend a target water temperature of 64-68°F / 18-20°C

Herbi’s All Natural is stuffed with a wide variety of natural ingredients to support the development of a diverse ecosystem in your soil

LEDs will indicate conductivity

Bluelab pH 4.0 Calibration Solution- 250ml Emerald Harvest range LangbeiniteIt is recommended that pH instruments are 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). Essential for use with all Bluelab pH products for the calibration of Bluelab pH Probes. To ensure solutions remain accurate: Avoid cross contamination Decanter into a smaller plastic cup Discard sample after use Store in a cool dark