BlueLab Calibration Solution - 7.0 pH Size:500 ml Use a non-ionic wetting agent

Use a non-ionic wetting agent for better penetration

and 69% runs wetter and suits humidors instead

Gallon - Kit contains 1 FlaVUH 4X Concentrate (4-0-4) - Quart

Detachable Motor Box: Pulls off for tool-free cleaning

Its durability

BlueLab Calibration Solution - 7.0 pH Size:500 ml Use a non-ionic wetting agentThe 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