Water Quality Monitor Measure Pen ORP Tester Meter 0 to ±1999mg/LmV High Accuracy Handheld Pen Tester Meter for Aquarium Pool

Feature: Compact and portable pen design,easy to operate and storage. Large and clear LCD, easy to read and accurately measuring functions. The tester is made of high quality electronic components to ensure high accuracy. Suitable for water sources, aquariums, hydroponics, swimming pools and other water systems. The resolution of ORP tester is 1 mv, very high sensitivity. Specification:Model: ...