PUR markets its latest water-purification product as a mini watertreatment plant in a packet. Indeed, the pragmatically named PURPurifier of Water employs the exact chemical process as used in manymunicipal water-treatment plants around the Western world. Developed more than a decade ago by Proctor Gamble, and used inmunicipal as well as humanitarian applications, the process introducesiron sulfate and calcium hypochlorite in a replica watch gift powder form to watertainted with sediments and microorganisms. Unlike iodine or othertypical treatments used in the outdoors, the PG process pulls all thegunk in water together, coagulating nasties including cysts, microbes,viruses and bacteria into clumps you can then filter out.
As a two-step process, calcium hypochlorite, a bleaching agent,kicks in after the initial coagulation to kill off any remaininggastrointestinal disrupters. The final result is water thats 99.99percent pure, according to data from PUR parent company RelianceProducts, which needed U.S. Environmental Protection Agency approvalbefore introducing the replica Technomarine watch chemically-potent product to the consumermarket earlier this year. Scott Mitchell, a spokesman for Reliance, explains the iron sulfatecoagulation process by referring to the chemical reaction as a dirtmagnet. It reacts in the water and pulls everything in suspensiontogether in clumps, he said.
I tested the product with tannin-tainted water from a stream innorthern Wisconsin. Flowing from the depths of the ChequamegonNational Forest, the water was dark brown and speckled with sedimentsand microorganisms swimming free. Working with the PUR Clean Drinking Water Kit -- a $28.99do-it-yourself water treatment plant that includes the PUR chemicals,stir sticks, filtering cloth and containers -- I mixed and stirredand followed replica Tissot watch directions for 45 minutes. I watched the clock for timedwaits while chemical reactions triggered. Slowly, the brown waterbegan to turn clear, with sediment clumping together in a disgustingreddish mass at the bottom of the container.
没有评论:
发表评论