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原文传递 EVALUATION OF SURVIVAL STRAWS (POCKET PURIFIER)

题名：	EVALUATION OF SURVIVAL STRAWS (POCKET PURIFIER)
作者：	G F THOMSON G DRIVER
关键词：	pocket；evaluation；straw；viva；microorganism；purification；particle；filter；section；benzene
摘要：	Preliminary results raise some doubts as to the bactericidal efficiency of Survival Straws The possible inactivation ot the bactericidal resin in the straw by the Simulated Contaminated Water employed, would need to be investigated before further studies could proceed. This report is a preliminary report of microbiological studies on Survival Straws (Pocket Purifier) The trial was undertaken as part of the overall study on water purification systems Survival Straws were obtained from their manufacturer Calco Ltd . Rosemont. U S.A via their Australian distributor. Three straws were also forwarded by the RAAF The Survival Straw is used by placing the bottom end in water and drawing water through the tube as with an ordinary "drinking straw" The straw as housed in a protective casing is 21 cm long and 1 6 cm in diameter There are three main sections in a straw (Figure 1) The first is a primary inlet filter to remove suspended particle matter. The second is a halogenated polystyrene divinyl-benzene quarternary ammonium anion resin containing 38% iodine This section is alleged to kill microorganisms The third is a purifying medium of carbon to remove impurities and make the water palatable The manufacturers claim that the Survival Straw will produce water that is microbilogically potable, and palatable from any non-saline source. The manufacturers further claim that the purifying life expectancy of fhe Straw is greater than its filtering capacity Thus it can be used until water can no longer be drawn into the mouth.
报告类型：	科技报告