Bluelab pH4 Calibration Solution 250ml cal mag Calibration should be performed at

Calibration should be performed at least once a month

Comes with easy-mount suction cups

reduce to 1

• Can be used indoors or out in soil or hydroponics

and comes with four way finger slots for improved Cloning Collar extraction

Bluelab pH4 Calibration Solution 250ml cal mag Calibration should be performed atpH 4. 0 calibration solutions a must in every grower's toolbox! Contains 250 ml 8. 4 fl oz Boost your pH products longevity with regular cleaning and calibration Type: A clean probe is an accurate probe Bluelab pH Pen Cleaning Instructions Bluelab pH & Soil pH Probe Cleaning Instructions Bluelab Soil pH Pen Cleaning Instructions pH 4. 0 calibration solution MSDS