A professional manufacture and sales of various electronic balances, moisture analyzers, viscometers and laboratory instrument manufacturer of weight measure instruments..
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A professional manufacture and sales of various electronic balances, moisture analyzers, viscometers and laboratory instrument manufacturer of weight measure instruments..
Relying on advanced technology, excellent production capabilities, and perfect service, W&J takes the lead in the industry now and spreads our W&J all over the world. Together with our products, our services are also supplied to be the highest-level. conductivity instrument If you are interested in our new product conductivity instrument and others, welcome you to contact us.In order to ensure users' safety, W&J is strictly tested and has been certified under many international standards including FCC, CCC, CE, and RoHS.
Acidity meter (hereinafter referred to as pH meter) is a widely used chemical analysis instrument that uses hydrogen ion selective electrode to measure the pH value of liquid. The acidity meter uses the potentiometric method to measure the pH value. Its basic principle is: a reversible hydrogen ion indicator electrode connected to an internal reference electrode and an external reference electrode are immersed in a certain solution to form a primary cell, and a battery electromotive force is generated between the internal and external reference electrodes at a certain temperature. This electromotive force is related to the activity of hydrogen ions in the solution, but has little to do with the presence of other ions. The instrument measures the magnitude of the electromotive force and finally converts it into the pH value of the test solution and displays it.
In order to facilitate operation in experiments, the hydrogen ion indicator electrode connected to the internal reference electrode and the external reference electrode are often combined to form a composite electrode.
Model | PH-25 | PH-3C | |
Rank | 0.05 | 0.01 | |
Range | pH | (0.00~14.00) pH | (0.00~16.00) pH |
mV | (0~1599) mV | (0~±1999) mV | |
Resolution | pH | 0.01 pH | |
mV | 1 mV | ||
Error | pH | ±0.01 pH±1d | |
mV | ±1% FS | ||
Input Impedance | ≥1×1012 Ω | ||
Input Current | ≥1×1012 A | ||
Stability | (±0.05pH±1d)/3h | ||
°C Compensation | Hand (0.0~60.0) °C | ||
Power | 230/115Vac ± 15% | ||
Size (mm) | 220×160×65 | ||
N.W. (kg) | 1.5 | ||
Functions | 1. LCD 2. Temperature Compensation by Hand 3. One or Two Calibration Points 4. Self-moving E-201-C Style pH Combined Electrode | ||
Inner Packing (mm) | 365×305×215 | ||
Outer Packing (mm) | 640×350×78 (including 10 pcs) | ||
We also provide customized electronic balances/ laboratory scales with special functions according to customer needs.
