Technical Resources

Community water systems in the United States use one of three additives for water fluoridation. Decisions on which additive to use are based on the cost of product, product-handling requirements, space...Read more

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Normality is the way a chemist says six of this is equal to a half-dozen of that:  The gram equivalent weight of an acid, base or salt is that fraction of its molecular weight which contains (for aci...Read more

Should your wastewater stream treatment style be Continuous, Batch, or Continuous-Batch? Should your control mode be Feedforward or Feedback? How you lay out your treatment schematic depends entirely ...Read more

If your pH application involves low flow rates and a relatively small pH adjustment (say, under 10 gallons per minute and 0.5 unit change), your best bet would be to find a reliable local water treatm...Read more

This article is a technical education piece to thoroughly describing OPR and its characteristics, typical applications, and ORP examples. What Is “ORP”? ORP is an abbreviation for Oxidation Reduct...Read more

  Below are typical answers to the questions asked about our Polymer Feed System, MixMate ®, Selection. Use the tables in the Specifications and Model Numbering Guide Sections to select...Read more

What ORP is and when and how to use it instead of free chlorine Author: Heather Rekalske Though the measurement of free chlorine concentration is often indicated for the disinfection of water and disi...Read more

Tubing and Connection Tutorial /* ...Read more

LMI PD Series Metering Pump Introduction /* ...Read more

LMI PD Series Metering Pump Input /* ...Read more

Excel XR Features and Benefits /* ...Read more

Excel XR in Analog Mode /* ...Read more

Jar testing is a method used to create a proportion. How much of a given chemical is needed to effect the change you want in a water sample? For example, how much of a given concentration of sodium hyp...Read more

By itself, a pH controller is blind to variations in flow, which can easily lead to under-treating or over-treating a wastewater stream. A flowmeter on the other hand, has no idea if pH changes occur....Read more

The calculations below will size a chlorine feed pump in gallons per day (GPD) as if the water to be chlorinated was running all the time during a 24 hour day. When your water is actually flowing, you...Read more

How Does A Reference Electrode Work? Courtesy of Sensorex The main conditions that affect the life of your pH sensor are the process temperature and the presence of various chemicals i...Read more

Since 1979, HCP Pumps of America has served residential, commercial, industrial and municipal industries with a full line of solids handling, grinder, water supply, chemical, dewateri...Read more

A paddlewheel flow sensor is a basic sensor for determining how much water is moving through a pipe of virtually any size. How do flowmeters work? The meter’s paddlewheel must make contact with the ...Read more

The chemical you choose to use will have a major effect on the performance of your pH system, as well as the cost of maintaining it. But which chemical to use is a matter of trade-offs. One of the most...Read more

The following information offers chlorination tips and tricks: Liquid chlorine (usually sodium hypochlorite) oxidizes everything it can in water — iron, manganese, sulfur, sulfur dioxide (rotten eg...Read more

Choosing the right materials for your chemical processing equipment can be challenging. We’ve gathered together a library of downloads to help. If you have questions or need assistance choosing m...Read more