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77 EC Conductivity Standard Solution
Contains 250 ml/8
Simply set your target pH and let the controller handle the rest
History reporting to assist data-driven decision making
Double-junction
Bluelab pH 4.0 Calibration Solution - 500 ml Box of 6 US halloween25 77 EC Conductivity Standard SolutionpH 4. 0 calibration solutions a must in every grower's toolbox Features: Contains 6 bottles 500 ml 16. 9 fl oz Boost your pH products longevity with regular cleaning and calibration
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