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pH Tester Working Principle, Application and Buying Guide

pH Tester Working Principle, Application and Buying Guide

Through this article, you can learn about the working principle, application and how to purchase digital electric water conductivity meter PH tester and conductivity meter.
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Working Principle of pH Tester Conductivity Meter

Electrode Construction

A pH tester usually consists of two electrodes: a glass electrode and a reference electrode. The glass electrode is sensitive to hydrogen ions, while the reference electrode provides a stable potential.

Potential Difference Measurement

When the electrode is immersed in the solution to be tested, the glass electrode reacts with the hydrogen ions in the solution to produce a potential difference proportional to the hydrogen ion concentration. The reference electrode maintains a constant potential.

Conversion to pH Value

The electronic circuit inside the tester converts the potential difference into a pH value and shows it on the display. The pH value usually ranges from 0 to 14, with 7 being neutral, below 7 being acidic, and above 7 being alkaline.

You Can Choose the pH Tester You Need

Where Can a pH Tester Be Used?

Conductivity meter PH tester is an instrument used to measure the conductivity of a solution and is widely used in many fields. The following are the main applications of EC conductivity meter:

Wastewater treatment
Environmental monitoring
Petrochemical industry
Mining and smelting
Application of Digital electrical Water conductivity meter ph and conductivity meter ec tester instrument.png Applicatios of Digital electrical Water conductivity meter ph and conductivity meter ec tester instrument.png

Frequently asked questions about the ph tester

pH Tester Calibration and Maintenance

Calibration is a key step to ensure the pH tester measures accurately, which usually includes the following steps: Prepare standard buffer, clean the electrode, calibrate, and record calibration data: Regular maintenance can extend the life of the pH tester and ensure its accuracy, mainly including the following aspects: regular cleaning of the electrode, storage of the electrode, checking the electrode status, regular calibration, and avoiding extreme conditions.
When using a pH tester, there are a few tips that can improve the accuracy and reliability of your measurements. Here are some helpful tips: 1. Preheat the electrode 2. Clean the electrode properly 3. Use the appropriate buffer 4. Perform a multi-point calibration

How to Choose a pH Tester?

When buying a pH tester, you can consider the following key factors:
Measurement range: Choose a measurement range that suits your needs. Usually, the range of pH testers is 0-14.
Accuracy and resolution: Check the accuracy (such as ±0.01 pH) and resolution of the instrument to ensure that it meets your measurement requirements.
Electrode type: Choose the appropriate electrode type, such as glass electrode or composite electrode, considering its applicability and durability.
Temperature compensation: Choose an instrument with automatic temperature compensation function to improve measurement accuracy at different temperatures.
Calibration function: Give priority to instruments that are easy to calibrate and support multi-point calibration to improve measurement accuracy.
Portability: If you need to use it in different locations, choose a model that is lightweight and easy to carry.
Taking all these factors into consideration can help you choose the right pH

See What Customers Say about pH Testers

Anna Petrovna Ivanova

It is small and easy to carry, suitable for my frequent use between outdoor and laboratory.

Omar Faruk Demir

The electrodes are of good quality and still perform well after some use. At this price point, this pH tester performs beyond expectations and is a great value for money.

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Structural Features of pH Tester

Structural Features of pH Tester

High resolution LCD display, 5.7 inches. Automatic/Manual temperature compensation ensures electrical conductivity meter accurate results. Reset feature automatically resumes digital conductivity meter all settings back to factory default options. Multi-reading feature allows electrical conductivity meter auto-read, timed-read and continuous-read. Auto-hold feature senses and locks the measurement endpoint. IP54 waterproof.