Introduction
Product Definition
The A70C is a six-in-one multifunctional water quality testing pen that integrates TDS (Total Dissolved Solids), pH (acidity/alkalinity), EC (electrical conductivity), SALT (salinity), Celsius (℃), and Fahrenheit (℉) measurement.
Product Introduction
The A70C multifunctional water quality testing pen measures 181mm (L) × 44mm (W) × 38mm (H) and is equipped with three buttons: mode switch, lock, and power. The pen body integrates TDS, pH, EC, salinity, and temperature detection functions. It directly senses water samples and displays readings for quick and responsive operation.
Product Features
- 600mAh high-capacity rechargeable lithium battery, a single charge lasts up to six months;
- HD backlit display ensures clear readings even in the dark;
- High-performance titanium alloy probe provides stable, accurate readings over a wide detection range;
- The pH function adopts the latest nano salt bridge technology, which ensures professional and stable readings while extending the service life of the pH electrode;
- Type-C universal charging port compatible with most Android phone charging cables on the market;
- Triple display on one screen. The first screen mainly shows TDS value, pH value, and temperature; the second screen mainly shows EC conductivity + salinity, along with temperature.
Key Parameters
- TDS measurement: Range 0-9990ppm (10.1-100.0ppt), resolution 1ppm/0.1ppt, accuracy ±2% F.S.
- pH measurement: Range 0.00-14.00pH, resolution 0.01pH, accuracy ±0.05pH.
- EC measurement: Range 0-9990μS/cm (10.1-200.0mS/cm), resolution 1μS/cm/0.1mS/cm, accuracy ±2% F.S.
- Salinity measurement: Range 0.01%-25.00%, resolution 1ppm/0.1ppt/0.1%, accuracy varies by range: 0.01%-5.00% at ±0.1% F.S; 5.1%-25.00% at ±1% ±2% F.S.
- Temperature measurement: Range 0-60℃ (32.1-140.0℉), providing temperature compensation and reference for other water quality parameters.
Usage Scenarios
- Quick testing of household drinking water and water purifier output water quality
- Water quality monitoring and maintenance for fish tanks and aquariums
- Water quality management in aquaculture
- Nutrient solution concentration testing for hydroponic plants
- Testing of swimming pools, hot springs, and general water environments
FAQ
Q: Does the A70c have a lock function?
A: Yes. This product has a lock function. Press the lock button once to lock the readings on the current screen, and press it again to unlock.
Q: How often does the pH function need calibration?
A: Unlike the sand core technology commonly used in current market products, the pH electrode of this product uses nano salt bridge technology. After calibration, recalibration is generally only needed every 1-2 months.
Q: Does pH measurement require calibration?
A: Since pH detection is based on electrochemical principles, prolonged use depletes the reference solution inside the electrode, causing pH value drift. Therefore, periodic calibration is required.
Q: What should I do if the measurement range is exceeded?
A: The maximum detection ranges for TDS and EC parameters are 100ppt and 200mS/cm, respectively, which basically cover extreme concentrations in practical scenarios. Exceeding the range is unlikely to occur.
Q: What is the purpose of temperature measurement?
A: Readings are greatly affected by temperature fluctuations, especially conductivity. The inclusion of temperature detection is to provide the program with a basis for temperature compensation, offsetting the influence of temperature changes on measurement readings.
Q: Are there any important precautions for using this product?
A: Yes. The test pen cannot be used to test corrosive strong acid or strong alkali solutions, nor high-temperature water above 70℃, as both scenarios will cause irreversible damage to the pH electrode. In addition, after testing high-salinity water samples, promptly rinse the probe with purified water to prevent clogging and damage to the nano salt bridge on the pH electrode.
Related Terms
- TDS: Total Dissolved Solids, the total amount of dissolved substances in water.
- pH: A unit for measuring acidity/alkalinity, ranging from 0.00 to 14.00; 7 is neutral, below 7 is acidic, and above 7 is alkaline.
- EC: Electrical Conductivity, indicating the ability of an aqueous solution to conduct electric current.
- SALT: Salinity, indicating the content of dissolved salts in water.
- ppm: parts per million; 1ppm is approximately equal to 1mg/L.
- ppt: parts per thousand; in this product, 1ppt = 1000ppm.
- μS/cm: Microsiemens per centimeter, a unit of electrical conductivity.
- mS/cm: Millisiemens per centimeter; 1mS/cm = 1000μS/cm.
- F.S: Full Scale; ±2% F.S means the error is calculated as a percentage of the full scale.