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 177 results

GAOTek Portable pH Meter

SKU: GAOTEK-PHM-153
GAOTek  portable ph meter is a perfect combination of advanced electronic technology, sensor technology, and software design.

GAOTek 0 to 14 LCD Digital Pocket Pen pH Tester – Accuracy ± 0.02 pH

SKU: GAOTek-PHM-175
The 0 to 14 LCD Digital Pocket Pen pH Tester provides accurate pH measurements with ±0.02 accuracy, featuring a compact design for convenient, on-the-go testing.

GAOTek 2 Points Calibration PH Meter

SKU: GAOTek-MPCP-211
GAOTek 2 Points Calibration pH Meter, is a commonly used equipment, mainly used to accurately measure the pH value of the liquid medium.

GAOTek 3 in 1 Water Quality pH Meter

SKU: GAOTek-PHM-120
GAOTek’s 3 in 1 Water Quality pH Meter is a comprehensive device that allows users to test the quality of drinkable water.

GAOTek 3 Point Calibration pH Meter

SKU: GAOTek-MPCP-239
This 3 Point Calibration pH Meter has ±0.002pH of accuracy, -2 pH to 20 pH measuring range, and 0.1 pH, 0.01 pH, 0.001pH resolution.

GAOTek 300 M Steel Rule Portable Water Level pH Meter – High accuracy

SKU: GAOTek-PHM-284
The 300 M Steel Rule Portable Water Level pH Meter offers high accuracy in measuring water levels and pH, ensuring precise and reliable data for various applications.

GAOTek 8-Points Calibration PH Meter

SKU: GAOTek-MPCP-208
This 8-points calibration pH Meter has a pH range of -2 pH to 20 pH, mV or ORP resolution of 0.1 mV, 0.01 mV, and a temperature accuracy of 0.1.

GAOTek Accuracy Benchtop PH Meter

SKU: GAOTek-MPCP-219
This Accuracy Benchtop pH Meter has a pH range of -2 pH to 20 pH, a pH resolution of 0.001 pH, and an mV range of -1999.9 mV to 1999.9 mV.

GAOTek Agricultural ph Meter

This Agricultural Ph Meter has a temperature range of 41 °F to 113 °F, a pH range of 3.0 pH to 14.0 pH, and a rechargeable battery.

GAOTek Analyzer pH Meter

SKU: GAOTek-MPCP-238
This Analyzer pH Meter with 3 Point Calibration has -2 pH to 20 pH measuring range, ±0.002 pH accuracy, and 0.1 pH, 0.01pH, 0.001pH resolution

GAOTek Aquarium Dissolved Oxygen Sensor Meter Portable Dissolved Oxygen pH Meter Water Oxygen Tester – Protection level IP68

SKU: GAOTek-PHM-173
The portable Aquarium Dissolved Oxygen Sensor Meter measures dissolved oxygen and pH levels in water, providing accurate, real-time data for maintaining optimal aquatic conditions.

GAOTek Automatic Benchtop Liquid PH Meter

SKU: GAOTek-BPHM-234
GAOTek automatic benchtop liquid pH meter is an online water quality monitor with a microprocessor.

GAOTek Automatic Calibration Agriculture PH Meter

SKU: GAOTek-MPCP-229
This Automatic Calibration Agriculture pH Meter has a range mV of -1200 mV to 1999.9 mV, a pH accuracy of ±0.02 pH and, an mV resolution of 1mV.

GAOTek Automatic Calibration Digital PH Meter

SKU: GAOTek-PMC-218
GAOTek Automatic Calibration Digital pH Meter is an electrochemical analyzer used to measure the ion concentration in a solution.

GAOTek Automatic Calibration Oxygen PH Meter

SKU: GAOTek-MPCP-231
This Automatic Calibration Oxygen pH Meter has an accuracy of ±0.40 mg/L, ±0.3%, resolution of 0.1 pH or 0.01 pH, and a residual current ≤0.1 mg/L.

GAOTek Automatic Calibration Oxygen PH Meter

SKU: GAOTek-PMC-217
This Automatic Calibration Oxygen pH Meter has an accuracy of ±0.40 mg/L, ±0.3%, resolution of 0.1 pH or 0.01 pH, and a residual current ≤0.1 mg/L.

GAOTek Automatic Calibration pH Meter

This Automatic Calibration pH Meter has a temperature range of 23 ºF to 230 ºF, a pH range of -2.00 pH to 20.00 pH and an AC adapter.

GAOTek Automatic Calibration portable PH Meter

SKU: GAOTek-MPCP-234
This Calibration portable pH Meter has a pH range of -2.000 pH to 20.000 pH, mV accuracy of -0.2 mV to 0.2 mV, and calibration of 1 to 5 points.

GAOTek Automatic Calibration Temperature PH Meter

SKU: GAOTek-MPCP-230
This Automatic Calibration Temperature pH Meter has a pH resolution of 0.1 pH, 0.01 pH, pH accuracy of ±0.01 pH, and mV accuracy of ±0.3 mV or ±0.1 %.

GAOTek Automatic PH Meter

SKU: GAOTek-MPCP-215
This Automatic pH Meter has multi-point calibration, with -2 pH to 20 pH range, 0.1 pH, 0.01 pH, 0.001 pH resolution, and ±0.002 pH accuracy.

GAOTek Automatic PH Meter With Two Point Calibration

SKU: GAOTek-MPCP-225
This Automatic pH Meter with Two Point Calibration has a -2 pH to 20 pH range, 0.1 pH, 0.01 pH, 0.001 pH resolution, and a ±0.002 pH accuracy.

GAOTek Benchtop Analyzer PH Meter

SKU: GAOTek-PMC-215
This Benchtop Analyzer pH Meter has a pH range of -2 pH to 20 pH range, a pH accuracy of ±0.002 pH, and a 0.1 pH, 0.01pH, 0.001 pH resolution.

GAOTek Benchtop EC PH Meter

SKU: GAOTek-BPHM-230
This Benchtop pH Meter has 3 calibrations point, an accuracy of 1%, a measure range of 0 ppt to 80 ppt, and a temperature range of 32 °F to 1830.2 °F.

GAOTek Benchtop Multi PH Meter

SKU: GAOTek-PMC-216
This Benchtop Multi pH Meter has a pH accuracy of ±0.002 pH, a pH range of -2 pH to 20 pH, and a pH resolution of 0.1 pH, 0.01 pH, and 0.001pH.

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.