BlueLab Calibration Solution - 4.0 pH Ships Free Diagonal drainage grid: Moves water

Diagonal drainage grid: Moves water to the outlet rather than trapping it in pockets under the pots

the 4 g covers 12 g

NPK: 2-1-5

Each 4 g pack holds a half ounce at 62% RH

BlueLab Calibration Solution - 4.0 pH Ships Free Diagonal drainage grid: Moves waterThe 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