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Illustration of color spectrum and ohmmeters for article on ph meters.
Published On: October 25th, 2022

Why Do Workers Like Using an Automated Pipette Machine?

Lab workers compare sample ratings with pH standards called buffers to garner reliable results. Measuring accurately is all-important when making complex pH measurements are important to get accurate. 

pH measurement instruments help laboratories compare acidity and alkalinity of solutions at given temperatures to measure pH levels in ranges from 1 to 14. Knowing the pH values of chemicals not only monitors the water humans drink but helps scientists, researchers, and others improve the quality of fish tanks, pools, and wastewater treatment facilities. 

The meter’s future evolves as its design trends toward smaller pocket-size versions that are accurate, accessible to software technology, and available worldwide. 

Use this guide to learn more about the pH meter types used inside and outside labs, how to store them, and their industrial applications.

Types of pH Measurement Meters

pH measurement instruments are categorized into three major meter types. 

  1. Pen Testers: Designed for on-the-go usage, pen testers are the least expensive and the least accurate to own. This includes a pH meter, a display, and an electrode. Food, pool, construction, and other industries measure liquids and semi-solids. 
  2. Handheld Meters: Also convenient when traveling, most handheld meters have a separate, interchangeable built-in electrode. The meters are used for field research or as a digital ph meter for laboratory usage.         
  3. Benchtop pH Meters: The most expensive and largest of the three-meter types, they can be mounted or placed on desktops. This electronic ph meter is suitable for professional and laboratory use and provides the highest degree of accuracy.   

The Importance of Caring for pH Measurement Instruments Correctly

pH measurement instruments last longer and perform better when users take certain precautions. 

  • Condition new pH measurement instruments by rinsing the bottom of the sensors with distilled water and placing them in beakers filled with KCL fluid or pH buffer solution for 20 minutes.
  • After soaking, new meters can be calibrated for use.
  • After each use, pH meters should be rinsed using distilled or deionized water. Blot, rather than wipe, the electrode ends with lint-free paper to prevent static electricity.
  • Never store a lab pH meter in distilled or deionized water which may cause inaccurate readings or give rise to permanent damage to the tester.
  • Reduce scratches to meters by keeping a protective rubber boot over the glass bulb when storing them in the KCL or buffer solution.

Industrial Applications for Lab Meters

Commercial locations use pH measurement instruments to test products that require a specific pH level before distribution. 

For example, the food industry tracks the pH level of food to prevent the growth of bacteria and pathogens and to adhere to food safety regulations. Meters can test dairy food, cosmetics, detergents, and alcoholic beverages. 

Likewise, meters test the pH levels of drugs, wastewater, textiles, water in power stations, soil, and municipal water supplies and are used for other applications such as blood chemistry and environmental cleanup. 

Hudson Robotics has been the leading supplier of automated products for over 38 years. Speak to a representative today!