TDS Conductivity Water Quality Tester Pen

Measurement Parameters

TDS Value (Total Dissolved Solids): Measures the total content of dissolved solids in water—including minerals, salts, and impurities—expressed in mg/L. This value directly reflects the purity of the water and serves as a key indicator for households to assess the filtration effectiveness of a water purifier.
Conductivity: Measures the capacity of ions in water to conduct an electric current, expressed in μS/cm. It is positively correlated with the TDS value; a higher reading indicates a greater concentration of ions and impurities in the water.
Synchronous Temperature Display: Most models are equipped with built-in temperature sensors that simultaneously display the water temperature. Some models also feature a temperature compensation function, which corrects for the influence of water temperature on measurement results, thereby enhancing data accuracy.

Features

1. Specialized Precision: Optimized specifically for TDS and conductivity measurements, offering detection accuracy of up to ±2%—with select high-end models reaching ±1%—to meet the demands of both routine screening and performance verification. 2. Ultimate Portability: Featuring a compact and lightweight pen-style design (weighing approximately 15–25g), the device is effortless to hold and operate, making it ideal for convenient testing at home, while traveling, or outdoors.
3. Simplified Operation: Simply power on the device and immerse it directly into the water to obtain rapid results within 1–3 seconds; the clear, intuitive digital display ensures that anyone can easily use the device without requiring any specialized technical knowledge.
4. Durable and Hassle-Free: The electrodes are predominantly constructed from corrosion-resistant titanium alloy or stainless steel, minimizing scale buildup. Powered by built-in button cells or lithium batteries, the device offers long-lasting battery life, with select models featuring an automatic shut-off function to conserve power.

Application Scenarios

Home Water Monitoring: Measure the TDS levels of tap water and water dispensed from purifiers to determine if the filter cartridge has aged (filter failure typically results in a significant increase in TDS values).
Daily Water Screening: Test local drinking water while camping or traveling to quickly assess its potability; verify the purity of bottled or jugged water.
Preliminary Commercial Quality Control: For bubble tea shops, coffeehouses, and aquariums, test water quality to ensure it meets operational requirements; for vendors of small-scale water purification equipment, use the device to demonstrate product effectiveness.