Ondeo Nalco evaporation retardant preserves water supplies in independent test

Oct. 1, 2002
Tests carried out in China and India on the water evaporation retardant, Water$avr, confirmed its effectiveness with savings from 25% to 42%, according to Ondeo Nalco, a subsidiary of the French company Suez.

Tests carried out in China and India on the water evaporation retardant, Water$avr, confirmed its effectiveness with savings from 25% to 42%, according to Ondeo Nalco, a subsidiary of the French company Suez. Independent third parties assessed, confirmed or verified the results.

Anna University in Chennai, India conducted a series of independent tests that confirmed water evaporation savings of 40%, 35% and 25%. The National Engineering Research Centre for Water Saving Irrigation in Yangling, Shaanxi, China organised testing that resulted in savings of 42%. The United Nations' International Environmental Technology Centre recently designated the patented product as an Environmentally Sound Technology.

Water$avr combines water evaporation retardant fatty alcohols with the process that allows the solution to self-spread while in contact with water. It places a monolayer thickness film of nC-18 alcohol to reduce evaporative partial pressure of water vapour above the water body, and hence the water loss rate via evaporation, without harming the environment. It uses the chemical dispersion method of ionic dissolution to allow the film to self-spread at a six-mile per hour rate. Ondeo Nalco signed a global distribution agreement with Flexible Solutions International to exclusively supply and distribute the product for the mining market and parts of the municipal market.

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