The PHS-3C pH meter features a high-definition LCD display and button operation, supports automatic shutdown, and has an IP54 protection rating. Equipped with a composite pH electrode and other accessories, it intelligently identifies endpoints, supports multiple measurement modes, and temperature compensation. The instrument can perform 1-3 point pH electrode calibration, automatically recognize standard buffer solutions, and supports data storage and retrieval. Its technical parameters include 0.01% accuracy, a pH measurement range of (-2.00～18.00) mV, and a measurement range of (-1999～1999) mV.

pH measurement is widely used in universities, environmental protection, medicine, food, sanitation, geology, metallurgy, marine and other fields. Common samples include acid rain, surface water, industrial wastewater, drinking water, beverages, daily chemical products and textiles. Since hydrogen ion activity is usually low, directly expressing it as concentration is inconvenient; therefore, pH value is used to characterize the acidity or alkalinity of aqueous solutions.

pH is defined as the negative logarithm of hydrogen ion activity, i.e.: pH = -lg[H+]. A commonly used glass pH electrode is a hydrogen ion selective electrode sensitive to H+. The core component of pH measurement is the electrode system, consisting of an indicator electrode (such as a glass electrode) and a reference electrode.

When the H+ activity (i.e., pH value) in a solution changes, the potential difference between the pH glass electrode and the reference electrode changes accordingly. By measuring this potential difference with a pH meter, the pH value of the solution can be calculated.

Main Features

● 6.0-inch high-definition LCD display, with key operation
● Supports automatic shutdown, power-off protection and factory reset functions
● Supports IP54 protection grade
● Comes with a composite pH electrode, electrode stand, dust cover and calibration buffer powder as standard accessories 

Intelligent detection and automatic recognition

● Intelligent determination of end point, supporting both balanced measurement mode and continuous measurement mode
● Manual temperature compensation supported
● 1-3 point pH electrode calibration supported
● Automatic recognition of three standard pH buffer solutions: GB 4.00pH, 6.86pH, and 9.18pH, and custom pH buffer solutions supported 
Data Management
● Supports data storage (50 sets), viewing, and deletion

We are committed to providing the most suitable electrodes and solutions for various industries, precisely meeting diverse application needs.

• In the food industry, the pH value of meat is a key indicator for assessing its freshness and shelf-life potential.
• In the food industry, the pH value of monosodium glutamate (MSG) is closely related to its solubility, stability, and flavor profile.
• In the food industry, the pH value of beverages has a significant impact on their taste, stability, and shelf life.
• In agriculture, soil ORP serves as a "barometer" of soil redox state, directly affecting soil health and crop yield by regulating nutrient availability, microbial activity, and pollutant behavior.
• In the pharmaceutical industry, the pH value of pharmaceutical products is a crucial aspect of drug quality control.
• In the cosmetics industry, accurate measurement of the pH value of cosmetic products directly relates to product safety, stability, and efficacy.