PH Meter for Water Hydroponics Digital PH Tester Pen 0.01 High Accuracy Pocket Size with 0-14 PH Measurement Range for Household Drinking, Pool and Aquarium (Red) Electric Heaters Sturdy metal construction with washable

Sturdy metal construction with washable 600 D polyester fabric

organized and free of trash

wearing S size

The pack contains 4 durable

PH Meter for Water Hydroponics Digital PH Tester Pen 0.01 High Accuracy Pocket Size with 0-14 PH Measurement Range for Household Drinking, Pool and Aquarium (Red) Electric Heaters Sturdy metal construction with washablePH Meter for Water Hydroponics Digital PH Tester Pen 0. 01 High Accuracy Pocket Size with 0 14 PH Measurement Range for Household Drinking, Pool and Aquarium (Red) Features: How to use calibrationPress CAL for 5 seconds to enter the calibration mode, press in turn to select the powders corresponding to 6. 86, 4, and 9. 18 to complete the calibration. Mini SizeThe mini size ph meter we designed allows you to easily put it in your pocket, so you can