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CT-6022 Portable Waterproof Digital PH Meter Water Quality ph Monitor Tester

CT-6022 pH Meter is the highest pH meter in its class. The level of accuracy of this tool is also very

High Accuracy Digital TDS Meter Tester Pen Type Tap Bottled Water Quality Filter Purity Monitor

Features: Automatic shutdown: automatically shut down after 10 minutes Reasonable design: the pen electrode can be directly inserted into in

PH-009 Original Pocket Pen Type Water y0.0-14.0pH PH Meter Digital Tester for Aquarium Pool Water Laboratory

Features: The electrode has been used(laid) for long time from the last calibratio The electrode has been used in particularly