Introduction
产品定义
The A50 TDS water quality tester is a portable TDS (Total Dissolved Solids) testing instrument that quickly measures the total dissolved solids content (TDS value, in ppm) in water based on the electrical conductivity principle. It directly reflects the total amount of dissolved impurities such as soluble inorganic salts and minerals in water. It is a simple testing tool for water quality screening and purification effectiveness checks. The product adopts an integrated pen-style design, is compact and portable, and is easy to operate without complex reagents. Simply power it on and immerse it in the water sample for a quick reading. It is suitable for rapid water quality screening in household, commercial, aquaculture, and other scenarios.
产品特点
- Fast testing: insert the probe into the test solution and obtain a reading in 2 seconds.
- High-precision material electrodes provide sensitive response, good repeatability, and low measurement error, ensuring reliable basic water quality screening.
- Simple, slim pen-style design, lightweight and compact, with a blue housing for easy carrying; it can be placed in a storage case or pocket, making it convenient for testing at home or on the go.
- One-button control, ready to use after power-on, no professional training required, and easy for anyone to operate.
- Uses a low-power high-precision chip, with low standby power consumption and an auto power-off function that automatically cuts power after long periods of inactivity, extending battery life.
核心参数
- Measurement range: 0-9990 ppm (above 999 ppm, the “×10” symbol is displayed)
- Resolution: 1 ppm
- Accuracy: ±2%
- Power supply: LR44 button cell battery × 2
- Housing material: ABS
- Auto power-off: automatically powers off after 5 minutes of inactivity
使用场景
- Household water purification testing: compare water quality from tap water, bottled water, RO reverse osmosis water purifiers, and ultrafiltration water purifiers, and check whether purification filter cartridges are losing effectiveness.
- Drinking water screening: test TDS values of bottled water, direct drinking water, well water, and spring water.
- Aquaculture: monitor TDS in fish tanks and aquaculture water to help control water mineralization.
- Commercial water purification industry: in water purification stores and on-site after-sales testing, visually demonstrate water quality differences before and after purification to customers.
FAQ
Q: What does the value measured by the TDS tester represent?
A: It represents the total mass of dissolved solids in 1 liter of water. The higher the value, the higher the total amount of dissolved minerals and salt impurities in the water. However, TDS alone cannot be used as a criterion for determining water safety, and cannot directly determine whether bacteria, heavy metals, or residual chlorine in water exceed standards.
Q: Does it need calibration before testing?
A: It is pre-calibrated at the factory and ready to use out of the box. After long-term use or when readings deviate significantly, it can be calibrated with standard TDS calibration solution.
Q: What precautions should be taken during testing?
A: When using this tester, pay attention to the following:
1. Rinse the probe with clean water and wipe it dry before testing to avoid interference from residual water sample;
2. Immerse the probe in the water sample, but do not submerge the body to prevent water ingress and damage to the internal circuit;
3. Keep the water temperature as close to room temperature as possible; extremely high or low temperatures may affect measurement accuracy;
4. Do not soak the probe in strong acids, strong alkalis, or highly corrosive liquids for a long time.
Q: Why are readings different when measuring the same cup of water twice?
A: Stirring of the water sample, temperature changes, and residual water stains on the probe surface can all cause slight fluctuations. It is recommended to take multiple measurements and use the average value. Keep the water sample still during testing and wait until the reading stabilizes before recording.
Q: Does a lower TDS value mean healthier water?
A: No. TDS only reflects the total amount of dissolved solids. Purified water has an extremely low TDS value but lacks minerals needed by the human body. Qualified tap water has a certain TDS value and still complies with drinking water standards. Water quality should not be judged by TDS value alone.
相关术语
- TDS (Total Dissolved Solids): The total content of dissolved solids in water, including inorganic salts and organic matter. It is an important indicator for evaluating water purity.
- ppm (parts per million): Indicates the mass of solute per million parts of total solution mass. 1 ppm is approximately equivalent to 1 mg of dissolved solids per liter of water.
- RO machine (reverse osmosis water purifier): Filters impurities in water through a reverse osmosis membrane. The produced water usually has a low TDS value.
- Ultrafiltration water purifier: Uses an ultrafiltration membrane to remove most suspended solids, colloids, and bacteria, but its removal rate of dissolved solids is lower than that of an RO machine.
- LR44 button cell battery: An alkaline button cell battery with a voltage of 1.5 V, widely used in small electronic devices.