GAO Tek offers a good selection of pH meters. They are further categorized by features: automatic calibration,   benchtop, food & beverage,  handheld,   industrial, laboratory, multi-point calibration, outdoor, five point calibration, ORP units (mv), three point calibration, two-point calibration, rugged, and water quality.

GAO Tek’s pH meters have been widely used in the water treatment and purification industry We have numerous customers in such major metros in the U.S. and Canada for the water treatment and purification industry as:

AECOM, MWH Global (now part of Stantec), Tetra Tech, and Carollo Engineers in Los Angeles, California;

CH2M Hill (now part of Jacobs Engineering Group), Mott MacDonald, Carollo Engineers, and Tetra Tech in Denver, Colorado;

EPCOR Water USA, Veolia North America, Suez North America, and Jacobs Engineering Group in Houston, Texas;

Veolia North America, AECOM, MWH Global (now part of Stantec), and Black & Veatch in Chicago, Illinois;

EPCOR Water USA, Carollo Engineers, MWH Global (now part of Stantec), and Veolia North America in Phoenix, Arizona;

Trojan Technologies (a SUEZ company), Echo logics Engineering, H2nanO, AECOM in Toronto, Ontario;

Our customers in water treatment and purification industry have used GAO Tek’s pH meter products for such applications as:

  • pH Monitoring in Drinking Water Treatment (General): GAO Tek’s pH meters, widely used in drinking water treatment plants, ensure that the water’s acidity or alkalinity falls within regulatory standards. Maintaining the correct pH level is crucial for effective disinfection processes (such as chlorination) and the overall safety and taste of the drinking water.
  • Wastewater Treatment Process Optimization: GAO Tek’s pH meters play a vital role in wastewater treatment plants by monitoring and controlling the pH levels throughout the treatment process. Optimal pH conditions are essential for the efficiency of various treatment stages, including coagulation, flocculation, and precipitation, leading to the removal of contaminants and ensuring compliance with environmental regulations.
  • Industrial Process Water Control: GAO Tek’s In industrial facilities, pH meters are employed to monitor and control the pH of process water used in boilers and cooling systems. Maintaining the correct pH helps prevent corrosion, scale formation, and microbial growth, thereby ensuring the longevity and efficiency of industrial equipment and reducing maintenance costs.

GAO Tek’s pH meters have been widely used in the chemical manufacturing industry We have numerous customers in such major metros in the U.S. and Canada for the chemical manufacturing industry as:

LyondellBasell Industries, Chevron Phillips Chemical Company, Dow Inc., and ExxonMobil Chemical Company in Houston, Texas;

ExxonMobil Chemical Company (Baton Rouge Refinery), The Dow Chemical Company (Plaquemine Operations), BASF Corporation (Geismar site), and Honeywell (Baton Rouge Specialty Chemicals Plant), Louisiana’s chemical manufacturing sector;

Chevron Corporation, Dow Silicones Corporation, LyondellBasell Industries (Equistar Chemicals), and The Clorox Company in the Bay Area, California;

Dow Inc. (formerly DuPont), FMC Corporation, Arkema Inc., and Johnson Matthey in PHiladelpHia, Pennsylvania;

Nalco Water (an Ecolab Company), PVS Chemicals, Inc., Stepan Company, and Univar Solutions in chemical manufacturing industry;

NOVA Chemicals, Dow Canada, Shell Canada Chemicals, and Agrium in Edmonton, Alberta;

Our customers in chemical manufacturing industry have used GAO Tek’s pH meter products for such applications as:

  • Reaction Monitoring: GAO Tek’s pH meters are used to monitor and control chemical reactions by measuring the acidity or alkalinity of reaction mixtures. Maintaining the optimal pH level is crucial for controlling reaction rates, yield, and the quality of the final product. pH meters help ensure that reactions proceed under the desired conditions, leading to efficient and high-quality chemical production.
  • Process Control in Water Treatment: GAO Tek’s many chemical manufacturing processes involve the use of water for cooling, heating, or as a solvent. pH meters are employed to monitor and control the pH of water used in these processes. Controlling the water pH helps prevent corrosion of equipment, ensures the effectiveness of catalysts, and maintains the stability of chemical solutions. This is especially important in industries such as petrochemicals, where water is extensively used in various processes.
  • Quality Control of Final Products: GAO Tek’s pH is a critical parameter in determining the quality and characteristics of chemical products. pH meters are used in the quality control process to assess the final pH of chemical products before they are packaged and shipped. This is essential in industries such as specialty chemicals and pharmaceuticals, where the pH of the final product can impact its stability, solubility, and overall performance.

GAO Tek’s pH meters have been widely used in the food and beverage industry We have numerous customers in such major metros in the U.S. and Canada for the food and beverage industry as:

International Flavors & Fragrances Inc., Estée Lauder Companies Inc., Revlon Inc., and Avon Products Inc. in New York City, NY;

Chevron Corporation, Dow Inc., Genentech (Roche), and Amyris Inc. in San Francisco, CA;

Archer Daniels Midland Company (ADM), The Molex (Koch Industries), and Nalco Water (Ecolab Inc.) in Chicago, IL;

Jacobs Engineering Group Inc., Avery Dennison Corporation, Northrop Grumman Corporation, and Occidental Petroleum Corporation in Los Angeles, CA;

NXP Semiconductors, Freescale Semiconductor, Cirrus Logic Inc., and Auragen Inc.  in Austin, TX;

Maple Leaf Foods, Molson Coors Beverage Company, McCain Foods, and Tim Hortons in Toronto, Ontario;

Our customers in food and beverage industry have used GAO Tek’s pH meter products for such applications as:

  • Quality Control in Food Processing: GAO Tek’s pH meters are crucial for quality control during food processing. Monitoring the pH levels of ingredients, intermediate products, and final food products ensures that the desired taste, texture, and safety standards are met. For example, in the production of sauces, dressings, and beverages, maintaining the correct pH is essential for both flavor and preservation.
  • Fermentation Processes in Brewing and Winemaking: GAO Tek’s in the brewing and winemaking industries, pH meters play a vital role in monitoring fermentation processes. Yeast activity, which is critical for alcohol production, is influenced by pH. Maintaining the optimal pH range during fermentation ensures the proper development of flavors and the prevention of undesirable microbial activity.
  • Cheese and Dairy Production: GAO Tek’s pH measurement is crucial in the production of cheese and other dairy products. Different types of cheeses require specific pH levels to achieve the desired texture and flavor. pH meters help cheese makers monitor the acidity during the fermentation and ripening processes. Similarly, in yogurt production, pH control is essential for the consistency and taste of the final product.

GAO Tek’s pH meters have been widely used in the agriculture industry We have numerous customers in such major metros in the U.S. and Canada for the agriculture industry as:

Olam Spices & Vegetable Ingredients, Faribault Foods, Inc., Pinnacle Packing Company, and Marquez Brothers International, Inc. in Fresno, California;

Dole Fresh Vegetables, Inc., Fresh Express, Inc., Mann Packing Company, Inc., and Taylor Farms in Salinas, California;

  1. & J. Gallo Winery, Foster Farms, Sensient Natural Ingredients, and Stanislaus Food Products in Modesto, California;

Baniak Produce Co., JV Smith Companies, Greengate Fresh, L.L.C., and Tanimura & Antle in Yuma, Arizona;

DuPont Pioneer, Kemin Industries, Renewable Energy Group (REG), and Permeate Refining in Des Moines, Iowa;

Nutrient, AGT Food and Ingredients, Cameco Corporation, and Saskatoon Colostrum Company in Saskatoon, Saskatchewan (Canada);

Our customers in agriculture industry have used GAO Tek’s pH meter products for such applications as:

  • Soil pH Management: GAO Tek’s pH meters are used in agriculture to measure and monitor the pH levels of soil. Different crops thrive in specific pH ranges, and soil acidity or alkalinity can significantly impact nutrient availability. pH meters help farmers assess and adjust soil pH to create optimal conditions for plant growth and nutrient absorption.
  • Irrigation Water Management: GAO Tek’s pH meters are employed to analyze the pH of irrigation water. Water with extreme pH levels can negatively affect soil pH and plant health. By regularly testing and adjusting the pH of irrigation water, farmers can ensure that the water used for crop irrigation is within the desired range, preventing potential adverse effects on soil and plants.
  • Crop Health Monitoring: GAO Tek’s pH meters play a role in monitoring the pH of nutrient solutions used in hydroponic and soilless cultivation systems. In controlled environments such as greenhouses, farmers can tailor nutrient solutions to specific pH levels to optimize nutrient uptake by plants. pH meters help ensure that the nutrient solutions maintain the appropriate acidity or alkalinity for the health and productivity of crops.

GAO Tek’s pH meters have been widely used in the pharmaceuticals industry We have numerous customers in such major metros in the U.S. and Canada for the pharmaceuticals industry as:

Johnson & Johnson, Pfizer Inc., GlaxoSmithKline plc, and AstraZeneca in PHiladelpHia, Pennsylvania;

Biogen Inc., Vertex Pharmaceuticals Incorporated, Novartis Institutes for Biomedical Research, and Sanofi Genzyme in Boston, Massachusetts;

Genentech (Roche), Gilead Sciences, Inc., Amgen Inc., and BioMarin Pharmaceuticals Inc. in the San Francisco Bay Area, California;

Bristol Myers Squibb, Merck & Co., Inc., Pfizer Inc., and Regeneron Pharmaceuticals, Inc. in New York City, New York;

GlaxoSmithKline plc, Biogen Inc., Novartis Institutes for Biomedical Research, and Grifols in Research Triangle Park, North Carolina;

Apotex, Sanofi Pasteur, Gilead Sciences, and Novartis Pharmaceuticals in Toronto, Ontario;

Our customers in pharmaceuticals industry have used GAO Tek’s pH meter products for such applications as:

  • Drug Manufacturing: GAO Tek’s pH meters are used in pharmaceuticals manufacturing to monitor and control the pH levels of solutions and formulations during the production of drugs. Maintaining specific pH ranges is crucial for the stability and effectiveness of pharmaceuticals products.
  • Quality Control of Raw Materials: GAO Tek’s pH meters play a vital role in the quality control of raw materials used in pharmaceuticals production. The pH of ingredients such as excipients, solvents, and active pharmaceuticals ingredients (APIs) must be within specified ranges to ensure the quality and consistency of the final drug product.
  • Bioprocessing and Fermentation: GAO Tek’s In the production of biopharmaceuticals and vaccines through fermentation processes, pH meters are employed to monitor and regulate the acidity or alkalinity of the culture media. Maintaining optimal pH conditions is essential for the growth and productivity of microorganisms or cells used in bioprocessing.

GAO Tek’s pH meters have been widely used in the biotechnology industry We have numerous customers in such major metros in the U.S. and Canada for the biotechnology industry as:

Biogen Inc., Vertex Pharmaceuticals Incorporated, Genzyme (Sanofi Genzyme), and CRISPR Therapeutics in Boston, Massachusetts;

Genentech (Roche), Gilead Sciences, Inc., Amgen Inc., and Illumina, Inc. in the San Francisco Bay Area, California;

Illumina, Inc., Thermon Fisher Scientific, Vertex Pharmaceuticals Incorporated, and CRISPR Therapeutics in San Diego, California;

Biogen Inc., IQVIA, Syngenta Biotechnology, Inc., and Grifols in Research Triangle Park, North Carolina;

Regeneron Pharmaceuticals, Inc., Bristol Myers Squibb, Alexion Pharmaceuticals, and Pfizer Inc. in New York City, New York;

Apotex, Sanofi Pasteur, Gilead Sciences, and Novartis Pharmaceuticals in Toronto, Ontario;

Our customers in biotechnology industry have used GAO Tek’s pH meter products for such applications as:

  • Fermentation Monitoring: GAO Tek’s pH meters are crucial in biotechnology for monitoring the fermentation process, which is often used in the production of biopharmaceuticals, enzymes, and other biotechnology products. Maintaining the optimal pH level is essential for the growth and productivity of microorganisms involved in fermentation.
  • Cell Culture: GAO Tek’s In cell culture processes, which are fundamental in biotechnology to produce therapeutic proteins and other biomolecules, pH meters are used to monitor and control the acidity or alkalinity of the cell culture media. Maintaining the proper pH range is critical for cell viability and protein expression.
  • Enzyme and Protein Purification: GAO Tek’s pH plays a significant role in the stability and activity of enzymes and proteins. pH meters are employed in the biotechnology industry during the purification processes to ensure that the pH conditions are optimal for the stability and functionality of the target biomolecules.

GAO Tek’s pH meters have been widely used in the environmental monitoring industry We have numerous customers in such major metros in the U.S. and Canada for the environmental monitoring industry as:

Tetra Tech, Inc., AECOM, ICF International, and Booz Allen Hamilton in Washington, D.C;

Environmental Science Associates (ESA), Aclima, Cambrian Innovation, and METER Group in the San Francisco Bay Area, California;

Ecolab Inc., Earth Networks, SCS Engineers, and Fugro in Seattle, Washington;

CH2M HILL (Jacobs), Merrick & Company, Air Resource Specialists, Inc., and Vista Geoscience in Denver, Colorado;

Parametrix, Clean Water Services, Greenpoint Technologies, and Geoengineers, Inc. in Portland, Oregon;

Air Sciences, Environmental Instruments Canada Inc., Golder Associates, and Maxxam Analytics in Toronto, Ontario;

Our customers in environmental monitoring industry have used GAO Tek’s pH meter products for such applications as:

  • Water Quality Monitoring: GAO Tek’s pH meters are widely used in environmental monitoring to assess the acidity or alkalinity of water bodies. Monitoring pH levels in lakes, rivers, and streams is crucial for understanding the overall health of aquatic ecosystems. Changes in pH can indicate pollution, nutrient imbalances, or other environmental stressors.
  • Soil pH Assessment: GAO Tek’s pH meters are utilized in environmental monitoring to assess the pH of soil in various ecosystems. Monitoring soil pH is important for understanding the availability of nutrients to plants, the impact of acid rain, and the overall health of terrestrial environments.
  • Air Quality Monitoring: GAO Tek’s pH meters can be employed in the monitoring of air quality, particularly in industrial and urban settings. They may be used to measure the acidity or alkalinity of rainwater, which can provide insights into air pollution levels and the presence of acidic pollutants in the atmosphere.

GAO Tek’s pH meters have been widely used in the mining and metallurgy industry We have numerous customers in such major metros in the U.S. and Canada for the mining and metallurgy industry as:

Rio Tinto Kennecott, Barrick Gold Corporation, Newmont Corporation, and Freeport-McMoRan Inc. in Salt Lake City, Utah;

Freeport-McMoRan Inc., ASARCO LLC, Southern Copper Corporation, and Rio Tinto Kennecott in PHoenix, Arizona;

Newmont Corporation, AngloGold Ashanti, Hecla Mining Company, and Freeport-McMoRan Inc. in Denver, Colorado;

Barrick Gold Corporation, Newmont Corporation, Coeur Mining, Inc., and SSR Mining Inc. in Reno, Nevada;

Freeport-McMoRan Inc., ASARCO LLC, Hubay Minerals Inc., and Capstone Mining Corp. in Tucson, Arizona;

Vale, Glencore, KGHM International, and Wallbridge Mining Company in Sudbury, Ontario;

Our customers in mining and metallurgy industry have used GAO Tek’s pH meter products for such applications as:

  • Ore Processing: GAO Tek’s pH meters are used in the mining and metallurgy industry during ore processing to monitor and control the pH levels of solutions involved in mineral extraction and separation processes. Maintaining specific pH conditions is crucial for optimizing the efficiency of chemical reactions and the recovery of valuable minerals.
  • Wastewater Treatment: GAO Tek’s pH meters play a vital role in monitoring and adjusting the pH levels of wastewater generated in mining and metallurgical operations. Proper pH control is essential for preventing environmental pollution and ensuring compliance with regulatory standards before discharging wastewater.
  • Flotation Processes: GAO Tek’s In the flotation process, which is commonly used in the mining industry to separate valuable minerals from ore, pH meters are employed to monitor and control the pH of flotation solutions. The optimal pH range is critical for the effectiveness of collectors and furthers in selectively separating minerals based on their hydropHobicity.

GAO Tek’s pH meters have been widely used in the research and development industry We have numerous customers in such major metros in the U.S. and Canada for the research and development industry as:

Google, Apple Inc., Facebook, Inc., and Genentech (Roche) in the San Francisco Bay Area, California;

Harvard University, Massachusetts Institute of Technology (MIT), Biogen Inc., and Vertex Pharmaceuticalsls Incorporated in Boston, Massachusetts;

Duke University, University of North Carolina at Chapel Hill, SAS Institute Inc., and GlaxoSmithKline plc in Raleigh-Durham, North Carolina (Research Triangle);

Qualcomm Incorporated, Illumina, Inc., Vertex Pharmaceuticalsls Incorporated, and Thermon Fisher Scientific in San Diego, California;

Microsoft Corporation, Amazon.com, Inc., and Fred Hutchinson Cancer Research Center in Seattle, Washington;

IBM Canada, Huawei Technologies Canada, Toronto-Dominion Bank (TD Bank), and University Health Network (UHN) Research in Toronto, Ontario;

Our customers in research and development industry have used GAO Tek’s pH meter products for such applications as:

  • Biomedical Research: GAO Tek’s pH meters are used in biomedical research to monitor and control the pH levels of cell culture media, reagents, and buffers. Maintaining precise pH conditions is crucial for cell viability, enzyme activity, and overall success in experiments related to cell biology and molecular biology.
  • Material Science and Chemical Research: GAO Tek’s In material science and chemical research, pH meters play a crucial role in analyzing and adjusting the pH of solutions used in experiments. This is especially important in studies involving chemical reactions, synthesis, and the development of new materials.
  • Environmental Monitoring and Analysis: GAO Tek’s pH meters are utilized in environmental research to assess the acidity or alkalinity of water, soil, and other environmental samples. Researchers use pH measurements to understand the impact of pollutants, assess the health of ecosystems, and study environmental changes over time.

GAO Tek’s pH meters have been widely used in the electroplating and surface finishing industry We have numerous customers in such major metros in the U.S. and Canada for the electroplating and surface finishing industry as:

Pioneer Metal Finishing, LLC, KC Jones Plating Company, ENS Technology, and Allied Finishing, Inc. in Los Angeles, California;

A.B. Plating Co., Gold Plating Services, Professional Plating Inc., and Coat of Chrome in Chicago, Illinois;

Wolverine Plating Corporation, Bales Metal Surface Solutions, Electro-Chemical Finishing Co., and KCH Services Inc. in Detroit, Michigan;

Sharretts Plating Company, Cleveland Black Oxide, Erie Plating Company, and Precision Plating Company in Cleveland, Ohio;

Del’s Plating Works, Inc., Industrial Metal Finishing Co., Electro-Coatings Inc., and Advanced Plating Technologies in Houston, Texas;

Advanced Surface Technologies, C.A. Picard Inc., Anochrome Technologies, and Classic Plating Inc. in Toronto, Ontario, Canada;

Our customers in electroplating and surface finishing have used GAO Tek’s pH meter products for such applications as:

  • Bath Monitoring in Electroplating: GAO Tek’s pH meters are used to monitor the acidity or alkalinity of electroplating baths. Controlling the pH of the bath is crucial for the efficiency and quality of the electroplating process, ensuring uniform deposition of the plating material onto the substrate.
  • Pre-Treatment Processes: GAO Tek’s In surface finishing, pH meters are employed to monitor and control the pH levels of pre-treatment solutions, such as cleaning and etching solutions. Proper pH control in these processes is essential for preparing the substrate surface and promoting adhesion of the coating or plating material.
  • Wastewater Treatment: GAO Tek’s pH meters play a vital role in monitoring the pH levels of wastewater generated during electroplating and surface finishing processes. Adjusting the pH before discharging wastewater is critical to ensure compliance with environmental regulations and to prevent adverse effects on water quality.

By the way, pH meters are sometimes referred to as pH testers, pH monitors, pH analyzers, acidity-alkalinity meters, digital pH meters, and laboratory pH instruments.

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Again, here are GAO pH meters , and they are further organized by feature: automatic calibration,   benchtop, food & beverage,  handheld,   industrial, laboratory, multi-point calibration, outdoor, five point calibration, ORP units (mv), three point calibration, two-point calibration, rugged, and water quality.

We have pH meters in stock and ship overnight to most parts of the U.S. and Canada. We provide 24/7 support. If you have any questions, our technical experts can help you. Please fill out this form or email us.