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 131 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 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 Agricultural ph Meter

SKU: GAOTek-PHM-171
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 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 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 pH Meter

SKU: GAOTek-PHM-174
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 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 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 pH Meter

SKU: GAOTek-PHM-149
This Benchtop pH Meter has a pH ranging from -1.00 pH to 15.00 pH, a temperature compensation range of 32 °F to 212 °F, and an LCD.

GAOTek Benchtop PH ORP Meter

SKU: GAOTek-BPHM-235
GAOTek benchtop pH ORP meter is take exquisite and compact design concept, saves space for you, and brings you a new experience.

GAOTek Benchtop PH Turbidity Meter

SKU: GAOTek-BPHM-231
GAOTek Benchtop pH Turbidity Meter is good anti-pollution and anti-interference, simple maintenance, 30-degree scattering measurement, 4 mA to 20 mA analog output, and digital.

GAOTek Blue Lab Benchtop PH Meter

SKU: GAOTek-BPHM-233
GAOTek blue lab benchtop pH meter uses the latest generation of microprocessor-based instruments, a highly intelligent, multi-function, high measurement performance, environmental adaptability, and other characteristics.

GAOTek Blue with White Ozone Dissolved PH Tester

SKU: GAOTEK-PHM-158
This ozone-dissolved pH tester has a dual CL/O3 range of 0 to 20mg/L, a temperature of 32 to 140 °F, an LCD, a reliable 32-bit processor, and is IP65

GAOTek Calcium Hydroxide Electrode PH Meter

SKU: GAOTek-PHM-167
This Hydroxide Electrode PH Meter has temperature range of 32 °F to 212 °F, pH range of 0 pH to 14 pH, and orp sensor.

GAOTek Cheese & Milk PH Meter

SKU: GAOTek-PHM-119
GAOTek Cheese & Milk PH Meter is a specialized device for accurately measuring the acidity levels in cheese and milk products.

GAOTek Classical Benchtop PH Meter

SKU: GAOTek-BPHM-232
GAOTek classical benchtop pH meter has 1 to 3 points calibration, automatic temperature compensation, setup menu contains 5 options, and accuracy of 0.01pH.

GAOTek Digital PH And Acidity Meter With Soil PH Detection

SKU: GAOTek-PHM-113
GAOTek’s Digital PH and Acidity Meter with Soil PH Detection is a versatile device designed for accurate pH measurement, specifically for soil pH detection.

GAOTek Digital pH Meter (Touch Screen)

SKU: GAOTek-PHM-101
GAOTEK pH digital conductivity meter is a portable and accurate instrument used for measuring the electrical conductivity of liquids.

GAOTek Digital PH Sensor

SKU: AOTek-PHM-288
This Digital pH sensor has a pH range 0 pH to 14 pH, processing pressure range of 15 PSI to 246 PSI and temperature compensation range of 32 °F to 275 °F.

GAOTek Digital Portable pH/ORP Meter

SKU: GAOTEK-PHM-157
GAOTek portable pH meter is widely used in pH measurement in environmental protection, education, scientific research, the pharmaceutical and chemical industries, the water industry, food safety inspection, and other fields.

GAOTek Digital Portable Type Water Quality Ph Meter Sensor

SKU: GAOTek-PHM-143
This Digital Portable Type Water Quality Ph Meter Sensor has a pH ranging from -2 pH to 20.000 pH, and a temperature range of 23 °F to 266 °F.

GAOTek Dissolved Oxygen pH DO Meter

SKU: GAOTek-PHM-166
This Oxygen pH DO Meter has temperature range of 32 °F to 212 °F, response time less than 30 s and 12V AAA battery.

GAOTek Dissolved Oxygen ph Meter

SKU: GAOTek-PHM-173
GAOTek The handheld device can be used for monitoring of dissolved oxygen, temperature, and PH in water, and can meet the requirements of portable accurate water quality measurement.

GAOTek Dissolved Oxygen ph Meter

GAOTek The handheld device can be used for monitoring of dissolved oxygen, temperature, and PH in water, and can meet the requirements of portable accurate water quality measurement.

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.