Introduction
Product Definition
The A46 TDS water quality testing pen is a portable water quality testing tool. By measuring the Total Dissolved Solids (TDS) content in water, it helps users quickly understand the purity of tap water, well water, mountain spring water, drinking water, and water produced by various water purifiers.
Product Features
- Rapid Testing: Simply place the testing pen into the water sample to quickly read the TDS value. Easy and convenient to operate.
- Water Purity Assessment: A lower TDS value indicates fewer dissolved solids in the water, which can be used to help determine water purity.
- Portable Design: Compact and lightweight, suitable for daily home use, outdoor water testing, and on-site testing in the water treatment industry.
- Digital Display: Features a digital LCD display of measurement results, providing clear and intuitive readings.
- Multi-Scenario Compatibility: Suitable for water quality testing of tap water, well water, mountain spring water, drinking water, and output water from various water purifiers.
- Easy Battery Replacement: Powered by 1.5V LR44 batteries, simple to replace.
Key Specifications
- Model: A46
- Dimensions: 155×31×23 (mm)
- Battery: 1.5V batteries (LR44) ×2
- Temperature Range: 0–60°C
- Measurement Range: 0–999 ppm
- Accuracy: ±2%
- Test Parameter: TDS (Total Dissolved Solids), i.e., the water purity value
Application Scenarios
- Rapid water quality testing for household tap water
- TDS value testing of water sources such as well water and mountain spring water
- Purity inspection of drinking water
- Output water quality testing for RO water purifiers
- Output water quality testing for ultrafiltration water purifiers
- Output water purity testing for functional water purifiers
- Routine water quality monitoring in the water treatment industry
FAQ
Q: What does TDS stand for?
A: TDS is the abbreviation for Total Dissolved Solids, which is “总溶解固体” in Chinese. It represents the total amount of dissolved solid substances in water and is commonly expressed in ppm.
Q: How do I take a measurement with the A46 TDS water quality testing pen?
A: Insert the probe into the water to be tested, ensuring that the sensing area is fully in contact with the water sample. Wait until the reading stabilizes, then read the TDS value. It is recommended to keep the water still during measurement to avoid splashing or vigorous stirring affecting the reading.
Q: What TDS value indicates “pure” water?
A: Generally, the lower the TDS value, the fewer dissolved solids in the water, and the relatively higher the water purity. However, different water sources and purification methods may vary, so the specific value should be judged based on actual conditions.
Q: Can the A46 measure hot water?
A: The temperature range of the product is 0–60°C. Measurements should be taken within this range. It is not recommended to measure water above 60°C, as this may affect the performance of the testing pen.
Q: Can the TDS value fully represent water safety?
A: No. TDS only reflects the total amount of dissolved solids in water and cannot directly reflect contamination by bacteria, viruses, heavy metals, organic matter, etc. Water safety must be evaluated by considering multiple indicators.
Q: What is the measurement range of the A46?
A: The measurement range is 0–999 ppm. Water samples beyond this range may not be displayed accurately, so it is recommended to measure within the specified range.
Related Terms
- TDS: Total Dissolved Solids (总溶解固体), referring to the total amount of solid substances such as soluble minerals and salts in water.
- ppm: Parts Per Million, a unit of concentration in parts per million. 1 ppm is approximately equal to 1 mg/L.
- Water Purity: Usually refers to the level of soluble solid content in water. The lower the TDS, the fewer dissolved solids in the water, and the higher the purity.
- RO Water Purifier: A water purification device that uses reverse osmosis technology and can effectively remove most dissolved solids and other impurities from water.
- Ultrafiltration Water Purifier: A water purification device that uses ultrafiltration membrane filtration, mainly removing suspended solids, macromolecular organic matter, etc., while retaining a relatively high amount of some dissolved solids.
- Functional Water Purifier: A water purification device that, on the basis of purification, adjusts water quality characteristics through mineralization, activation, and other methods.


