Water pH Meters

GAO’s water pH meters are devices that measure the acidity or basicity of water. pH is a measure of the concentration of hydrogen ions in a solution and ranges from 0 (most acidic) to 14 (most basic). A pH meter consists of a probe that is inserted into the water sample, and a meter that displays the pH reading. The probe of a pH meter contains a glass electrode that is sensitive to the concentration of hydrogen ions in the water. The electrode generates a voltage that is proportional to the pH of the water, which is then read by the meter and displayed as a numerical value.

GAO’s water pH meters are composed of probe, reference electrode, pH meter display, calibration solution, temperature sensor, and battery.

The other common names of pH meters are pH testers, pH probes, pH sensors, acid-base meters, hydrogen ion concentration meters, alkalinity meters, acidic solution meters, alkaline solution testers, pH indicators, pH analyzers, pH measurement devices, acidity/alkalinity monitors, pH measurement instruments, pH monitors and pH gauges. 

GAO Tek has been focused on servicing the North American markets and has earned praise from many of its customers in the U.S., Canada, and Mexico.

Showing 1–24 of 125 results

PH Meter with ION (500 Data Store and Self-diagnostic)

SKU: GT00ZK00ZX
GAOTek PH Meter with ION detects PH and ION with high accuracy and stores 500 history data.

Multifunctional PH Meter (mV, CF, TDS, Temp, Conductivity)

SKU: GT00Y400ZQ
This Multifunctional PH Meter (mV, CF, TDS, Temp, and Conductivity) has multifunctional detection capability and can measure mV, CF, TDS, Temp, and Conductivity with replaceable electrode.

PH Meter with Temperature (High Resolution, Accuracy)

SKU: GT00Y400ZP
This pH Meter with Temperature (High Resolution, Accuracy) is designed to measure the solution’s PH and temperature value with manual and automatic temperature compensation.

PH Meter with mV/Temp (Quality Controls, 2 Point Calibration)

SKU: GT00Y400ZK
This PH Meter with mV/Temp (Quality Controls, 2 Point Calibration) is designed using 2 point calibration for high accuracy measurements and can be used for daily testing and quality controls.

PH Meter with mV (2 Point Calibration, High Accuracy)

SKU: GT00Y400ZM
This PH Meter with mV (2 Point Calibration, High Accuracy) is designed using 2 point calibration mode and has manual temperature compensation function to enhance the measurement accuracy of upto 0.05 pH.

GAOTek PH Meter with mV/Temp ( Temp. Compensation, 3 Point Calib)

SKU: GT00Y400ZJ
This PH Meter with mV/Temp (Temp. Compensation, 3 Point Calib) is designed using 3 point calibration for high accuracy measurements and supports automatic temperature compensation over the complete pH range from -1.00 pH ~ 15.00 pH.

GAOTek PH Meter with 2 Points Calibration (Electrode Slope)

SKU: GT00Y400ZF
This PH Meter with 2 Points Calibration (Electrode Slope) is designed to measure the pH and millivolt of samples with the accuracy of 0.01 pH.

GAOTek PH Controller with 3 Points Calibration (Reset Function)

SKU: GT00Y400ZN
This PH Controller with 3 Points Calibration (Reset Function) is designed for monitoring the pH of liquids in chemical, pharmaceutical, environmental protection and food industries.

PH Meter with ORP and Conductivity Range (Data Storage, Accurate)

SKU: GT00Y400ZD
Key Features Specifications   Key Features Optional 5 kinds of PH buffer solution can make 1-3 points automatic calibration Can

GAOTek PH Meter with mV and Temperature (Accurate, Auto Calibration)

SKU: GT00Y400ZC
This PH Meter with mV and Temperature (Accurate, Auto Calibration) is designed to measure the concentration of solution’s mV and pH value and be calibrated with 2 points auto calibration.

PH Meter with mV and Temperature (Two Point Auto Calibration)

SKU: GT00Y400ZB
This PH Meter with mV and Temperature (Two Point Auto Calibration) is designed to measure the concentration of solution’s mV and pH value in the range from 0 ~ 14.00 pH.

PH Meter with mV and Conductivity and Temp (Wide Measuring Range)

SKU: GT00Y400ZA
Key Features Specifications Key Features High resolution 7 -inch color touch – controlled LCD screen, simple and convenient in use

PH Meter with Conductivity and TDS (Multimodes Power)

SKU: GT00YY00ZT
Key Features Specifications Key Features Simple, easy-to-use portable pH meter with Large LCD display 1-5 points calibration with auto-buffer recognition

PH and ORP Controller with High Accuracy (Light Weight)

SKU: GT00XB00ZZ
Key Features Specifications Key Features Used for applications such as water treatment and monitoring, galvanic-decontamination, chemical processing, Wastewater control and

PH Meter with High Precision (3000 Data Store and Single Board)

SKU: GT00Y400ZY
Key Features Specifications Key Features Computer based: It adopts CPU high-performance chip, high-precision AD conversion technology and SMTtechnology to complete

PH Meter with ORP and Temperature (Low Error Rate)

SKU: GT00ZJ00ZX
Key Features Specifications Key Features Double row nixie tubes display PH value/mV value and temperature respectively. Computer based: It adopts

PH Meter with mV (3 Points Calibration and Self-Diagnostic)

SKU: GT00ZA00ZU
Key Features Specifications Key Features Large LCD display Microprocessor-based chip and parts apparatus are jointed with SMT technology offers high

PH Meter with ORP (0.2% Accuracy and 0-14 PH Range)

SKU: GT00ZJ00ZW
Key Features Specifications Key Features High quality and economy Widely measuring range Widely used for routine use in laboratories, production

GAOTek Portable PH Digital Alcalinity Tester

SKU: GAOTek-PHM-102
GAOTek Portable pH Digital Alkalinity Tester is a compact and reliable instrument designed for measuring pH and alkalinity levels in liquids.

GAOTek pH Sensor Electrode

SKU: GAOTek-PHM-103
GAOTek pH Sensor Electrode for Water Treatment is a specialized electrode designed for accurate pH measurements in water treatment applications.

GAOTek pH ORP Meter Analyzer and pH Controller

SKU: GAOTek-PHM-104
GAOTek pH ORP Meter Analyzer and pH Controller with Dosing in Wastewater is an advanced instrument designed for comprehensive monitoring and control of pH and ORP (Oxidation-Reduction Potential) levels in wastewater treatment processes.

GAOTek Portable digital pH Meter for Food and Milk

SKU: GAOTek-PHM-107
GAOTek pH Meter for Food and Milk is a digital pH meter specifically designed for the accurate measurement of pH levels in food and milk products.

GAOTek pH Sensor for Water Laboratory

SKU: GAOTek-PHM-108
GAOTek pH Sensor is a reliable and accurate pH meter designed for water laboratory applications.

GAOTek Water pH Acidity Meter

SKU: GAOTek-PHM-121
GAOTek manual disc polarimeter is an optical instrument used to measure the optical rotation of a substance.

GAO Tek’s water pH meters have the following functions:

  • Measure pH: The primary function of GAO water pH meters is to measure the pH of water. pH is a measure of the concentration of hydrogen ions in water, which determines whether the water is acidic or alkaline. Our pH meters use a specialized electrode to measure the pH of water, which is typically displayed on a digital screen or readout.
  • Determine water quality: pH is an important indicator of water quality, as it can affect the solubility and toxicity of various chemicals and metals in water. By measuring the pH of water with GAO water pH meters, we can help determine whether water is suitable for various uses, such as drinking, irrigation, or industrial processes.
  • Monitor water treatment: Our water pH meters are used to monitor the pH of water during water treatment processes, such as chlorination, coagulation, and sedimentation. By monitoring the pH of water, operators can ensure that the treatment process is effective and that the water is safe for its intended use.
  • Maintain equipment: pH can affect the performance and lifespan of various equipment and machinery that use water. By monitoring the pH of water with our water pH meters, operators can prevent corrosion, scaling, and other issues that can damage equipment and decrease efficiency.

GAO’s water pH meters are rugged, portable, versatile and precision measurement instruments. They comply with applicable industry standards such as ISO 9001, ASTM E70, good laboratory practice/good manufacturing practice (GLP/GMP), food and drug administration (FDA) regulations, and CE certification.

Our water pH meters help our clients in complying with relevant U.S. government regulations such as:

  • Clean Water Act
  • Safe Drinking Water Act
  • Occupational Safety and Health Administration (OSHA) regulations
  • Environmental Protection Agency (EPA) regulations
  • Food and Drug Administration (FDA) regulations

Our water pH meters help our clients in complying with relevant Canadian government regulations such as:

  • Canadian Environmental Protection Act
  • Canadian Drinking Water Guidelines
  • Canadian Environmental Quality Guidelines
  • Occupational Health and Safety Regulations

GAO’s water pH meters have the following applications:

  • Water treatment: GAO pH meters are used to monitor the pH levels in water treatment plants to ensure that the water is safe for consumption.
  • Aquaculture: Our pH meters are used to monitor the pH levels in fish tanks, ponds, and other aquatic systems to ensure that the water conditions are suitable for fish and other aquatic organisms.
  • Agriculture: Our pH meters are used to measure the pH levels of soil and irrigation water in agriculture to optimize crop growth.
  • Environmental monitoring: GAO pH meters are used to monitor the pH levels of natural bodies of water, such as lakes, rivers, and oceans, to detect and prevent water pollution.2
  • Scientific research: Our pH meters are used in scientific research to measure the pH of various solutions in chemistry, biochemistry, and other scientific fields.
  • Food and beverage industry: Our pH meters are used to monitor the pH levels in food and beverage production processes to ensure product quality and safety.

Our water pH meters can be shipped overnight within the continental U.S. and Canada, and can be shipped globally.