Digital Redox ORP testing meter
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-1999mv to +1999mv pen type digital redox water tester ORP meter
Step 1: Put the orp meter into a saturated potassium chloride solution for 2 to 3 hours.
Step 2: Clean the electrode with water, then put orp meter into 256mv standard solution and shake gently.
Step 3: Adjust correction potentiometer with a mini-screwdriver until the reading is 256mv.
How to Use:
Step 1: Remove the protective cap, clean the electrode with water.
Step 2: Press " on-off" key, then put ORP meter into the water, the water should not exceed the waterline.
Step 3: Wait for around 10 minutes until the reading becomes stable, then press "HOLD" key to lock the measured value.
Step 4: After use, clean the electrode with water and wipe off water on the electrode.
How to calibrate the ORP meter?
The importance of ORP meter
Cautions:
1. While testing, gently stir the orp meter to remove the water bubbles on the electrode until the reading pulsate very slowly and reading become stable.
Normally it takes a few minutes or even approximate 10 minutes to stablize the reading.
2. Although the orp meter is waterproof, it should not be immersed in water for a long time, so the water should not exceed the water level in order to extend its life.
3. It is normal for the measured values of orp meter vary irregularly.
| Model No: | A57-B-1 |
| Measurement range: | -1999 ~ 1999mv |
| Tolerance accuracy: | ± 5 mv |
| Battery: | 4×1.5V ( AG-13 button battery) |
| Operating temperature: | 0~50℃ |
| Size: | 168×33×20 (mm) |
| Test item: | Test water negative potential value. |
| Advantages: | Fast determination, high accuracy and backlight function. |
| Application: | Swimming pool, aquarium, hydroponics, household drinking water. |