‘Tis the Season

By Greg Reyneke, MWS The arrival of winter brings another year to a close (they seem to fly by faster as we get older). It is a time to slow down, appreciate family and friends, […]

Ozone Generating Systems—Swimming Pool and Spa Application...

By Kelly Johnson, MWS Ozone (chemically written as O3) is a great swimming pool and spa oxidizer. Though not a stand-alone sanitizer or oxidizer, we will learn that it supports traditional pool and spa sanitizers, […]

Case Study: UV Disinfection Helps Colombian Community Overco...

By Jose Maria Gonzalez Regulators in Colombia are strengthening the standards and enforcement of water treatment processes aimed at protecting public health from microbial contamination and chlorine-resistant pathogens, such as Giardia and Cryptosporidium. The regulation […]

The Science of Ozone Laundry Systems

By Darrell Weeter There are huge developments in the methods we use to do laundry. The largest change is the realization that we can achieve high-quality standards without using hot water or hazardous chemicals. When […]

Rainwater Harvesting and Stormwater Collection

By Peter S. Cartwright, PE Rainwater/stormwater Collection and consumption of rainwater has been a common practice of humankind for centuries. To minimize contamination, the normal practice is to collect rainwater from a roof by means […]

UV Disinfection: Coming of Age in the Residential Market

By Diane Arnott and Anthony Oosterveld POU water disinfection is quite familiar to campers and hikers, who recognize that even a pristine-looking lake or stream can be carrying contaminants. These contaminants range from sediment to […]

How POU Activated Carbon Filters Work

By Henry Nowicki, PhD, Richard Capp, George Nowicki, Wayne Schuliger, Christopher Brunning and Barbara Sherman All activated carbons are not the same and a basic understanding of how activated carbon filters work can help users […]

Systems Approach to UV-C LED Water Disinfection

By Jim Cosman, Mitchel Hansen and Molly McKain Ultraviolet light has become a star player in the disinfection world. It is increasingly being used in key applications that require alternative disinfection options. UV disinfection has […]

Ion Exchange: The Role of Cross-Linking and Aging

By C.F. ‘Chubb’ Michaud, MWS The role of cross-linking (x-l) The level of DVB (cross-linking) a resin has determines the tightness of the resin. Higher cross-linked resins have lower moisture content, meaning more plastic and […]

Ion Exchange Resin Synthesis and Reactions

By C.F. ‘Chubb’ Michaud, MWS Making beads Take a fresh egg and break it into a bowl. It’s understandable that the moisture content of a raw egg is over 75 percent. Now hard boil another […]