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Ships within 48 hours · Estimated delivery Sep 14 - Sep 19
Four Sizes
increase flowering sites
Each 4 g pack holds a half ounce at 62% RH
NPK: 2-1-5
Cured flower goes to 55% or 62% instead
BlueLab Calibration Solution - 4.0 pH Ships Free Four SizesThe 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
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