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: ORP-169Measurement range: 0 – ±1999mg/LmVResolution: 1 mVAccuracy: ±5mVOperating voltage: 4*1.5V (AG-13 battery) (No-include)Working temperature: 0℃- 50℃
Correction: 1 point correction
Product dimension:188*35*35mm / 7.4*1.4*1.4inWeight: 290g / 10.2oz
Steps:1. Remove the protective cover.2. Touch the ON/OFF switch to turn on the power.3. Put the electrode into the solution to be tested, shake it gently, and read the displayed value after the value is stable.4. Touch the HOLD button to keep the current measured value. If you need to re-measure, press the HOLD button again to automatically release the hold status.5. After use, press the switch, wash the electrode with distilled water, and put on the protective coverautions:1: There is a white crystalline salt around the electrode, which is a normal phenomenon of the ORP electrode. Only when the electrode is immersed in clean water, it dissolves and disappears.2: When testing the ORP value, it usually takes about a few minutes to about 10 minutes. Wait for the value to stabilize and jump very slowly or read the displayed value as the measured value.3: The display value in ORP and air is jumping, it is normal phenomenon that there is no