Apera GroStar GS4-P 6-in-1 pH, EC, ppm & ORP Combo Pen Tester Kit Gen II | Hydroponics saltwater pH test Uses Hanna's Quick Cal pH/EC MI524-100
Description
Apera GroStar GS4 P 6 in 1 pH, EC, ppm & ORP Combo Pen Tester Kit Gen II Hydroponics saltwater pH test Uses Hanna's Quick Cal pH EC MI524 100 Uses Hanna's Quick Cal pH EC standard with a pH value of 6 no refilling ever required and oxidation reduction potential without juggling multiple meters color coded by mode for instant status recognition
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