Bluelab® pH 4.0 Calibration Solution 500ml Bioag Down To Earth Starter Mix

Down To Earth Starter Mix (3-3-3) 25lb

Specially formulated to encourage productive home orchards full of the delicious and nutritious tree fruits now popular in many backyard gardens

Full spectrum 3100k or 4200k

ornamental trees

Bluelab® pH 4.0 Calibration Solution 500ml Bioag Down To Earth Starter MixpH measuring equipment must be cleaned and calibrated regularly to ensure they are giving the user accurate readings. pH instruments are calibrated to pH7. 0 first (buffer) then to pH4. 0 (slope). Bluelab's EC CF equipment does not need calibrating as they are all factory calibrated. The CF27. 7 (EC2. 77) solution is used as a reference or checking solution to ensure you have adequately cleaned the EC CF probe.