Bluelab pH 4.0 Calibration Solution- 250ml Trellis Net & Hangers Its low application rate and

Its low application rate and broad compatibility make it an easy addition to both hobby and commercial growing systems

minimise repotting and the risk of transplant shock

Length is 2

This method:

Bluelab pH 4.0 Calibration Solution- 250ml Trellis Net & Hangers Its low application rate andIt 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