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Bluelab pH 4.0 Calibration Solution - 250 ml EU halloween25pH 4. 0 calibration solutions a must in every grower's toolbox Features: Contains 250 ml 8. 4 fl oz Boost your pH products longevity with regular cleaning and calibration
and pH with a clear display and easy-to-use buttons
take reliable readings anywhere to keep your plants flourishing
77 EC Conductivity Standard Solution
An EC meter built to last a lifetime – now on a bigger scale
Secure probe hold with leak-proof design
What’s Included
Polycarbonate body
displaying CF
and support confident decision-making
Suitable for 10 ml - 120 ml pumps only
Contains 6 bottles 500 ml/16
Includes fittings for quick installation
US$ 245.50
US$ 125.50
US$ 348.50