Bluelab® pH 4.0 Calibration Solution 500ml Bioag Mix 7ml per gallon water

Mix 7ml per gallon water and spray thoroughly once weekly

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

increasing the uptake of both

is the most concentrated source there is

and contains every essential nutrient

Bluelab® pH 4.0 Calibration Solution 500ml Bioag Mix 7ml per gallon waterpH 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.