ph probe Articles

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pH Probe Maintenance

by Digital Analysis Corp.  (Jul. 14, 2010)

The success or failure of pH measurement depends on the proper application of the probe and proper subsequent maintenance of the probe. The procedures described within apply to the most common pH probe in use today and that is the flat surface combination pH probe. The most common failure mode associated with pH probes is breakage. The pH ...

pH Electrode Architecture

by Digital Analysis Corp.  (Jul. 14, 2010)

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 ...

pH Adjustment - A Primer

by Digital Analysis Corp.  (Jul. 14, 2010)

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 ...

Monitoring pH and ORP in a SHARON reactor

by IWA Publishing  (Jan. 1, 2011)

This paper analyses the valuable information provided by the on-line measurements of pH and oxidation reduction potential (ORP) in a continuous single high ammonia removal over nitrite (SHARON) reactor. A laboratory-scale SHARON reactor equipped with pH, ORP, electric conductivity and dissolved oxygen (DO) probes has been operated for more than ...

Getting back to basics: What is pH?

by Environmental Services by Daniel L. Theobald  (Feb. 9, 2014)

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 ...

New Guide from METTLER TOLEDO on Increasing pH Sensor Lifetime

by Mettler - Toledo Int. Inc  (Oct. 21, 2015)

Proper care of pH sensors can dramatically increase their lifetime. A new guide from METTLER TOLEDO explains, step-by-step, how Intelligent Sensor Management (ISM®) technology provides maximum lifetime for pH probes. Urdorf, Switzerland – Over time and through use, pH sensors are affected by their measuring environment and require ...

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

by Camlab Limited  (Feb. 11, 2015)

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, ...

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

by Camlab Limited  (Mar. 4, 2015)

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

The effects of the ph-influenced structure on the dielectric properties of Kaolinite–water mixtures

by Soil Science Society of America  (Sep. 30, 2008)

The properties of clay–water mixtures are reflected in their wide-frequency dielectric responses that result from different polarization mechanisms. This feature is useful in various soil science applications but has not been systematically investigated. The objective of this study was to characterize the broadband dielectric spectrum of kaolinite ...

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

by Camlab Limited  (Oct. 12, 2015)

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 ...

Impact parameters investigation of DNA immobilisation process on DNA sensor response

by Inderscience Publishers  (Apr. 8, 2013)

This paper studies impact parameters of DNA sequence immobilisation on DNA sensor response. The parameters were examined including immobilisation time, carbon nanotubes concentration, DNA probe concentration and pH value. The DNA probe sequences were immobilised on surface of microelectrodes by using multi–walled carbon nanotubes (MWCNTs) as ...

Near field optical microscopy: a brief review

by Inderscience Publishers  (Feb. 7, 2012)

Near Field Optical Microscopy (NSOM) has evolved into a mature member of the family of scanning probe microscopy. In this article, we briefly go over the principle of NSOM, its breakthroughs and setbacks. We will describe some of the most commonly used NSOM modalities and conclude with the recent advances based on optical nanoantennas. We will ...

Komax teflon lined mixer simplifies acid injection for power plant

by Komax Systems, Inc.  (Jul. 15, 2009)

A major source of waste water in many power plants is the waste stream that results from ion exchange used for demineralizing the boiler feed water. The alkaline regeneration waste stream produced by the ion exchange process requires the addition of an acid to this stream before discharge from the plant. Regulatory authorities typically require ...

Continuous emission monitoring and control of packed tower odor control systems using the sycamore CEM

by Water Environment Federation (WEF)  (Oct. 13, 2007)

ABSTRACT Packed-tower chemical scrubbers, with sodium hydroxide (caustic) and sodium hypochlorite (bleach), are commonly used to treat foul air from wastewater treatment processes. The available control mechanisms include a pH probe and controller for the sodium hydroxide feed, an oxidation reduction potential (ORP) probe with a controller ...

Investigation of the use of TiO2 doped with metal ions in water disinfection

by IWA Publishing  (Dec. 1, 2010)

This research was conducted to improve titanium dioxide by transition metal doping using cooper. Sol gel method was used to prepare metal doped TiO2. Titanium isopropoxide and commercial TiO2 P25 were employed as catalyst precursor. The role played by the varied preparation parameters such as doping level and pH of solution discussed with respect ...

Treatment of kraft evaporator condensate using a thermophilic submerged anaerobic membrane bioreactor

by IWA Publishing  (May 1, 2010)

The feasibility of using a thermophilic submerged anaerobic membrane bioreactor (SAnMBR) for kraft evaporator condensate treatment was studied at 55±1°C over 6.5 months. Under tested organic loading rate of 1–7 kg COD/m3 day, a soluble COD removal efficiency of 85–97% was obtained. The methane production rate was 0.35±0.1 L methane/g COD and the ...

Results of heavy metals and other water quality levels in tap water from Çan sourced from Ağı Dağı (Mt. Ağı) (Çanakkale, Turkey)

by IWA Publishing  (Jan. 4, 2016)

In this study, the concentrations of heavy metals Pb, Cu, Zn, Cd, Ni, Fe, Mn and Cr were determined using an inductively coupled plasma and optical emission spectrophotometer (ICP-OES), and water quality parameters pH, temperature, and conductivity were measured using the YSI 556 MPS water probe. The water samples were collected monthly from ...

Water quality in the Arosa Bay

by OTT Hydromet - a member of Hach Company  (May 6, 2010)

Background One of the great impediments to further development of shellfish aquaculture in the north-west region of Spain isa perception that industry expansion and tourism could have negative environmental effects on the coastal waters. Especially the bay around Villagarcia de Arosa is very famous because of its excellent areas for shellfish ...

Design and Evaluation of a Flow Pump System for Column Testing

by ASTM International  (Sep. 1, 1994)

The design of the equipment components of a flow pump system for the measurement of solute (effluent) breakthrough curves from soil columns is described. In addition, the performance of the system in terms of the effects of equipment components and temperature on measured differential pressure fluctuations across soil specimens is illustrated. The ...

Two environmental laboratories, 1 private and 1 government, optimize automation and ROI with investment in BOD/Titrate duo (case study)

by MANTECH INC.  (Apr. 30, 2011)

MANTECH INC. is a leading manufacturer of automated multi-parameter, titration, BOD and COD laboratory instruments. Both a Private and Government Environmental Laboratory required optimized return on investment for both automated BOD/CBOD and automated multi-parameter systems. They each invested in the MANTECH BOD/Titrate Duo. Background Each ...

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