Bluelab pH 7.0 Solution Sachets (30) Shipping it provides superior performance and

it provides superior performance and reliability

Cal-Max™ calcium magnesium and iron During periods of high temperatures and accelerated growth

77 EC standard solution

Where the most sensitive plants (clones) often face difficulties

Bluelab pH 7.0 Solution Sachets (30) Shipping it provides superior performance andBluelab's 2. 77EC Conductivity Solution, pH 7. 0 and pH 4. 0 Calibration Solutions are now available in 20ml sachets. pH measuring equipment must be cleaned and calibrated regularly to ensure they are giving the user accurate readings. pH instruments are calibrated to pH 7. 0 first (buffer) then to pH 4. 0 (slope). The 2. 77EC Conductivity solution is used as a reference or checking solution to ensure you have adequately cleaned the EC CF probe.