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 321 results

GAOTek 5 Points Calibration PH Meter

SKU: GAOTek-MPCPM-202
This 5 Calibration pH meter has a PH measuring range of -2.00 pH to 20.00 pH, mV measuring range of -2000.0 mV to 2000.0 mV, and 0.1 mV of resolution.

GAOTek LCD Screen Water Digital Ph Meter

SKU: GAOTek-RPHM-213
This LCD Screen Water Digital pH Meter has a Temperature range 32 ℉ to 212 ℉, pH Measurement range of -2 pH to 19.99 pH, and response time ≤ 30 s.

GAOTek Multi Parameter ORP Meter

SKU: GAOTek-PMWOU-203
This Multi Parameter ORP Meter Has Measuring Range of -2.000 pH to 20.000 pH, Measuring Range of 2000.0 mV, and ± 0.002 pH of Measurement Accuracy.

GAOTek ORP Sensor Monitor

SKU: GAOTek-PMWOU-201
This ORP Sensor Monitor Has a Measurement Range 0 pH to 14 pH, Power Supply  220 V AC or 50 Hz, 24 V DC, and 14 °F to 453.2 °F Temperature Measurement.

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 1 to 5 Calibration Digital Point Meter for pH

SKU: GAOTek-PMTWP-211
This 1 to 5 calibration digital point meter for pH has temperature resolution of 32.04°F or 32.04°F, power supply DC5 V, and PH accuracy of ±0.002 pH.

GAOTek 1-3 Points Calibration Digital Water pH Meter

SKU: GAOTek-PMTWP-203
This 1-3 points calibration digital water pH meter has power supply of 100 V to 240 V AC, PH accuracy of ± 0.01 pH and IP protection rating of IP54.

GAOTek 1-to-5-point Calibration Automatic Digital pH Meter

SKU: GAOTek-PMTWP-205
This 1-to-5-point calibration automatic digital pH meter has power of DC 5 V, resolution of 32.18 °F and PH accuracy of ±0.002 PH.

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 Calibration Portable Meter

SKU: GAOTek-MPCPM-204
This Calibration portable meter has a accuracy ± 0.002 pH, reading mode auto read (Fast, Medium, Slow), Timed, Continuous, and resolution 0.1.

GAOTek 8 Points Calibration Best Portable pH Meter

SKU: GAOTek-PMTWP-208
GAOTek 8 Points Calibration Best Portable pH Meter GENERAL FEATURES Color high contrast LCD touch screen, 4.3 inch.

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 Bench Top Ion/pH Meter

SKU: GAOTek-PMTWP-210
This accuracy bench top Ion/pH meter has power supply of 100 V to 240 V, temperature accuracy of 32.0 ºF and temperature area of 23.0 ºF to 230.0 ºF.

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 Acidity Benchtop PH Meter

SKU: GAOTek-BPHM-213
GAOTek Acidity Benchtop Ph Meter is widely used in the field of the chemical industry.

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 Agricultural pH Soil Testing Meter

SKU: GAOTek-IPM-221
This Agricultural pH soil Testing Meter has an accuracy of +0.5% FS, a measuring accuracy of ±0.5%, a unit of 5k, and a lithium battery of 8.4 V.

GAOTek Agricultural Pool Water pH Meter

SKU: GAOTek-IPM-226
This Agricultural Pool Water pH Meter has a power supply of AC 85 V to 500 V, range of 0 pH to 14 pH, and a waterproof rating of IP66/NEMA4X. 

GAOTek Analytical Laboratory PH Meter

SKU: GAOTek-LPM-214
GAOTek Analytical Laboratory PH Meter is a common laboratory precise meter which is also the upgrade product for original meter.

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

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.