Drinking Water Tester

1. Is there anything I should be aware of when using the device?

Do not immerse the tester above the MAX line. After testing, rinse the probe thoroughly with purified water, gently wipe it dry, and cover it with the protective cap before storage. Avoid high temperatures and direct sunlight. Store the tester in a dry place when not in use.

2. Why does the tester always show “100 Excellent,” regardless of the water quality?

Check whether the protective cap has been removed from the probe before testing. The cap can block the sensor from detecting the water. Remove it and test again.

1. How often should the device be calibrated?

Calibration is recommended before first use, after a long period without use, and after testing highly contaminated water, as impurities may stick to the probe. Clean the probe thoroughly before calibration.

2. Why does the tester repeatedly show a calibration failure message?

This may happen if the calibration water is not pure enough. Use mineral-free purified or distilled water for calibration. Make sure the probe is thoroughly cleaned before you try again.

3. Should I use purified water or mineral water for calibration?

Use purified water labeled “purified” or “100% pure,” or use distilled water. Do not use mineral water, such as Evian or Perrier, because its minerals may interfere with calibration.

1. What type of batteries does the device use?

The tester uses two AAA batteries. Insert the batteries into the top compartment, making sure to follow the polarity markings.

2. How often should I replace the batteries?

With regular use, the two AAA batteries supplied with a new tester typically last 2–3 months. Replace the batteries if the screen becomes dim or the tester does not power on.

1. I received the tester with the top battery compartment open. Has it been used?

No. the device is a new product. The top battery compartment may be slightly open to make battery installation more convenient.