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 09202021-CH-Dental1 Why does the screen protector

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Durability: Tear-proof and water-resistant for added longevity

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 09202021-CH-Dental1 Why does the screen protectorPH 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 Features: Ideal for residential or commercial use, water, pool, spas, liquid food, laboratory, aquaculture and hydroponics. Advanced technology makes the test result fast and accurate. Easy calibration (pH4. 00, pH6. 86). Pocket size, lightweight, high quality. With Automatic Temperature