BlueLab Calibration Solution - 7.0 pH Canna Cribs S3E1 Stiiizy and the 67 g covers

and the 67 g covers a full pound

Other brands use a salt solution

BIO-INSECTICIDE

Light Blocking: The black side prevents light leakage

meter not included as shown in image- this is only for the carrying case

BlueLab Calibration Solution - 7.0 pH Canna Cribs S3E1 Stiiizy and the 67 g coversThe Bluelab Calibration Solutions are a very necessary part of a growers toolbox. These solutions are manufactured specific to the calibration process and referenced to high laboratory standards by Bluelab. They are required for the calibration of pH meters, pH monitors and controllers. Regular cleaning and calibrating of pH measuring equipment ensures accurate readings. Bluelab's EC CF equipment does not need calibrating, as they are all factory