Featured Articles
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ORP And pH — What You Don’t Know Can Hurt You
11/15/2016
When I look back at 2016 one of the most significant trends I observed was the growing acceptance of ORP measurements, especially for monitoring disinfection. With one caveat, the ORP value measured in a solution provides an unambiguous measure of the disinfection efficacy.
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Smart Sensors Have Finally Arrived
11/3/2016
The heavy-duty, industrial strength of Aquametrix probes have made them ideal for wastewater applications. But as Mark Spencer, President of Water Analytics and the manufacturer for Aquametrix, points out in this Water Online Radio interview, they are also being accepted by a growing industrial audience.
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The Most Misunderstood Fact Behind Dissolved Oxygen Sensors (It’s The Pressure, Not The Concentration)
8/5/2015
A dissolved oxygen sensor ought to be simple to understand. Whether it is membrane or optically based, it gives a signal that is proportional to the concentration of oxygen concentration in water.
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Rumors, Half-Truths, And Truths About Temperature And pH
4/6/2015
A few months ago I received a call from an angry user who was using one of our differential probes and a controller. Embedded in the probe is a thermistor that measures temperature.
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Color, Turbidity And Philosophy
1/28/2015
When we humans look at objects we describe them in terms of color. We say that an apple is red or a leaf is green. To us color is an attribute just as surely as the mass or dimensions of an object. But the fact is that color is a pure human construct. Take away the human and it does not exist.
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The Grand Unified Theory Of Probes
10/20/2014
Scientists spend their lives searching for simplicity.
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Why A Little Knowledge About Sensors Can Be A Dangerous Thing
6/4/2014
Every day our technical support people answer questions on the selection of sensors for pH, ORP, conductivity, dissolved oxygen and turbidity. No issue generates more confusion than cell constants for conductivity sensors. The vast majority of returns we process are for conductivity sensors that were ordered with the wrong cell constant. It turns out that cell constants are something that we all read but that most of us don’t really understand. Pick the wrong cell constant for a probe and your analyzer will happily give you numbers to 3 significant digits. The only problem is those numbers are wrong. By Mark Spencer, President, Water Analytics
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Aquametrix And The Analyzer
9/16/2013
Mark Spencer, President of Water Analytics, explains his plans for Aquametrix and the Company’s new 2400 analyzer.
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The Everyman’s Guide To The Miraculous But Misunderstood ORP Sensor
1/30/2013
Everyone in the water and wastewater industry knows and measures pH. Conductivity is a concept we all readily grasp. Dissolved oxygen and free chlorine are easy to understand since they refer to actual chemicals. But ORP is another matter. If you know that it stands for oxidation-reduction potential then you are already in a select minority. And if you can really explain what it means then you are eligible. By Mark Spencer, Aquametrix
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Water Analytics Expands Its Reach
12/5/2011
Mark Spencer, president of Water Analytics/ Aquametrix, sat down with Water Online Radio for this live interview from the show floor at WEFTEC 2011 in Los Angeles. Among other topics, Spencer shared his insight on new product development and the future of water instrumentation.