ph meter Articles

  • pH Electrode Architecture

    A pH Electrode can be compared to a battery in that an electrical voltage is generated between two points that is a function of water chemistry. In the case of a pH electrode the voltage potential is a function of the acidity or alkalinity of the solution in which it is immersed. Note: The terms pH electrodes and pH probes are often used synonymously, despite the fact that there are differences. ...


    By Digital Analysis Corp.

  • pH Adjustment - A Primer

    A brief review of the definition of pH, the pH scale, and some of the chemistry involved in pH Adjustment systems is provided below. For some this may be trivial, yet for many others this may be useful. The information provided below is typical of the background information we provide in our training classes / seminars. By Definition pH is the measure of free hydrogen activity in water and can be ...


    By Digital Analysis Corp.

  • Measure pH, conductivity, oxygen with HQD

    After just a short time, the HQD digital electrochemical measuring system has already established itself in practice. Both in the laboratory, with standard electrodes, and in the field, with rugged outdoor electrodes.  On the following pages, users describe their experience with the HQD system. Their experiences show that the system covers a wide range of applications, including direct ...


  • pH measurement: Six technical tips

    The pH value is one of the most important and therefore also one of the most frequently measured quantities in analytical chemistry. Sometimes, a simple pH test strip is sufficient for making a rapid check; precise pH meters are, however, required whenever accurate measuring results are needed. Such a pH meter is available in nearly every laboratory and is generally ready for use at a moment's ...


    By Metrohm AG

  • Getting back to basics: What is pH?

    Getting back to basics: What is pH? The most used measure in wastewater treatment, and for good reasons The “potential of hydrogen” or “pH” is the measure of free hydrogen activity in water and thereby indicative of the measure of its free acidity or free alkalinity. Gauged on a numeric scale of 0-14, solutions with a pH of less than 7.0 are acids. ...

  • Buy Smarter – what questions should you ask when buying a pH meter?

    When you’re looking to buy a pH meter, whether it’s to start measuring or to replace an existing meter, the range of brands and specifications available is huge. With so many options it can be difficult to know where to start, but taking a little time to choose carefully could save you a lot of time and money overall by making sure the meter you choose is right for ...


    By Camlab Limited

  • How can I measure the pH of food?

    Measuring pH in food is a useful indicator of consistency over batches for quality control but can also be used to monitor foods where the pH changes over time – for example in yogurt production, brewing or to test the freshness of foods. Standard pH electrodes will often struggle when used in food samples, as the reference junction becomes blocked the reaction time will get slower and ...


    By Camlab Limited

  • Get the scoop on the newest technology for the measurement of pH

    SENTRON had its 20th birthday in April 2005 and is world wide known as the manufacturer of glass free ISFET (Ion Sensitive Field Effect Transistor) pH systems. During the 20 years we developed and manufactured not only ISFET pH sensors but also pressure sensors in our own silicon chip production facility. This facility for development and manufacturing of solid-state sensors, enables us to ...


    By Sentron Europe BV

  • What are the key steps in measuring pH? Why do I need to calibrate?

    pH is a useful parameter which is used across all industries for quality control, environmental monitoring, lab work and much more. There are 10 key steps which should be followed to ensure pH measurements using a meter are accurate. pH is a useful parameter which is used across all industries for quality control, environmental monitoring, lab work and much ...


    By Camlab Limited

  • Peristaltic Pumps play key role in rectifying the pH balance of mine water

    After decades of uncontrolled industrial (mining) activities, water supply is under serious threat. Studies show that acid water levels in the country's mines are rising at a staggering average rate of 0.59 m/day. The water situation is in fact threatening the population’s survival. At the heart of resolving this problem are the treatment of water and wastewater. This article looks at ...

  • How should I clean a pH electrode, or revive a damaged electrode?

    Traditional glass pH electrodes are very delicate and need regular care to keep them in good working order. If your electrode has been damaged by exposure to incompatible chemicals such as proteins, heavy metals or sulphides, you may be able to clean and revive it using specialized cleaning solutions… pH electrodes that have a single junction are particularly susceptible to damage, and can ...


    By Camlab Limited

  • TDS and EC meters for hydroponics explained

    As technology advances, questions inevitably follow. Due to the rapid growth of the hydroponics and indoor gardening industry, it is important for growers to be familiar with the technology, in this case instrumentation. There is a myriad of nutrients and fertilizers available to help you cultivate the best possible plant yields, but what is consistent among all of them is they need to be ...


    By HM Digital, Inc.

  • Pump metering wastewater chemicals operationally effective and cost efficient

    Pumps are the heart of wastewater treatment systems and pump metering chemicals is critically imperative to required wastewater treatment! Different types of pumps are designed for unique wastewater treatment pump applications. Centrifugal pumps are used for general wastewater pumping. Positive Displacement pumps are used for pumping heavier solids. Chemical Metering Pumps are used for pump ...

  • Can I use two probes of the same type with a Hach HQ40D meter?

    Yes – two probes of the same type can be used with the Hach HQ40D. The Hach HQ40D is a multi meter with ...


    By Camlab Limited

  • WEF/A&WMA Odors And Air Pollutants Conference March, 2010

    Abstract The application of biotrickling filters (BTF) has become commonplace for the removal of hydrogen sulfide and for the reduction of odors from air emissions in wastewater treatment facilities. Operation at a low pH of 1.5-2.0 provides an environment for rapid reproduction of thiooxidans bacteria and metabolism of hydrogen sulfide (H2S). An elimination capacity in excess of 90 gm of ...


    By Biorem Technologies Inc.

  • Dredge caustic and abrasive materials in South Korea-case study

    Customer: Zinc mining & processing facility, South Korea. Problem: How to remove 200,000 cubic meters of 325 mesh goethite (pH 2.2 - 2.5 range; sulfuric acid) from a lined pond with dimensions of 120m x 253m. Since the material had settled and was resting on the pond bottom, dredging was selected as the appropriate removal method. No standard acid-resistant dredge ...


    By SRS Crisafulli, Inc.

  • Skid Systems - Case Study

    A Chemical Metering Pump is seldom used by itself. It is usually a part (ok, the part) of a chemical injection system into a process. Such a system requires various accessories, valves and controls to dispense the exact amount of chemical demanded by the application which may itself vary. Let us say if you are using chemical pump to achieve pH balance for the water. You need to measure the pH of ...

  • Why buy a Colorimeter

    Cyanide in your Juice? Mercury in your chicken soup? Your well water seems a little brown? Your wine causes you to pucker? There is a way to test for unknowns in solutions, waters and fluids. A colorimeter used to interpret the absorbance and/or transmittance of light entering a fluid, may be the way. ...


    By Geotechnical Services, Inc

  • Evaluating the effects of septic tank on shallow wells in Iba housing estate, Ojo LGA, Lagos

    Water samples from 30 shallow wells were measured for depth, depth to water table, and distance to septic tank. In situ parameters including electrical conductivity, pH, total dissolved solids, and temperature were measured using portable meters. Chemical parameters including salinity, chloride, calcium, alkalinity and total hardness were determined using titrimetry method. Sulphate and nitrate ...


    By Inderscience Publishers

  • Accuracy of different sensors for the estimation of pollutant concentrations (total suspended solids, total and dissolved chemical oxygen demand) in wastewater and stormwater

    Many field investigations have used continuous sensors (turbidimeters and/or ultraviolet (UV)-visible spectrophotometers) to estimate with a short time step pollutant concentrations in sewer systems. Few, if any, publications compare the performance of various sensors for the same set of samples. Different surrogate sensors (turbidity sensors, UV-visible spectrophotometer, pH meter, conductivity ...


    By IWA Publishing

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