November 2007 Volume 49 Number 11
Cover
	Back from the Brink by C.F. 'Chubb' Michaud A fellow speaker at an ion exchange conference in Cambridge, England back in 2000 stated that after 50 years in ion exchange academia, he was retiring. In announcing that impending event, he paralleled his career with the life cycle of the ion exchange industry.  read more   Making Sense of an Incomplete Water Analysis by Frank DeSilva The water treatment professional is often required to recommend a treatment scheme to rectify problem water. More often than not, the initial water analysis data that the end user provides is not sufficient to make a valid recommendation.   read more
Features
	Swimming Pool and Spa Mathematics for Service Professionals by Connie Sue Centrella The service sector of the swimming pool industry has long been challenged with how to effectively manage cleaning routes, provide pool and spa owners with the best water quality and maintain pool equipment at its optimal operational efficiency.  read more   Residential Pool Ozone Use by Beth Hamil Most people are familiar with the word ozone, but that is where the familiarity ends. In nature, ozone is among the most essential chemicals on the planet, existing as a gaseous component of the upper atmosphere. The Earth's ozone layer protects us from the suns harmful ultraviolet rays and without it, life on earth would likely be impossible.  read more   Ozone in Pools and Spas: An Opportunity for Profit by Cameron Tapp There is a vibrant recreational water market in need of the services of the skilled water treatment professional. Opportunities include installation and service of municipal, commercial and residential pools and spas and a host of specialty waterscapes and features...  read more   WQA Recertification Quiz read more   Salt System Science by Joe Sweazy In recent years, nothing has been embraced by the swimming pool industry like in-line saltwater chlorine generation. This amazing technology uses common salt to sanitize a swimming pool. While this technology is not new...  read more   Reaching Out to India: The Water Quality Association Extends Its Hand by Latasha Williams The Water Quality Association (WQA) is an international trade association representing the residential, commercial, industrial and small community water treatment industry.  read more   Eggheads by Laura Mirviss Just as he had every other Saturday morning, Carlos Hernandez sat at the kitchen table, eating the eggs his mother prepared. But he was frustrated that day: weeks had passed and still, he and his partners had not located a suitable hard residue to test in their research project.  read more
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Columns
	Become a Profile in 2008 by WC&P Staff read more   Ashes to Ashes, Dust to Dust: The Use of Test Dust in NSF/ANSI 42 and 53 by Rick Andrew read more   Harmful Water-Based Amoeba in the News Again by Kelly A. Reynolds, MSPH, Ph.D. read more   Tech Talk: e-pportunity--Aqua Maestro Takes Bottled Water to the Next Step by Brett S. Spitalny read more   Viewpoint: Ranting and raving by Karen R. Smith read more