Accession Number:

ADA265916

Title:

Evaluation of the Medical Efficacy of the Pre-Mac Model FWP Individual Water Purifier for Treating Microbiological Contaminants in Water

Descriptive Note:

Technical rept. Oct 1988-Dec 1991

Corporate Author:

ARMY BIOMEDICAL RESEARCH AND DEVELOPMENT LAB FORT DETRICK MD

Report Date:

1993-01-01

Pagination or Media Count:

41.0

Abstract:

Tests were conducted inhouse to determine the microbiological treatment efficacy of the Pre-Mac Model FWP hand-held water purifiers. Test waters represented various physicalchemical challenge conditions. Microbial challenges consisted of enteric bacteria Klebsiella terrigena, enteroviruses Echovirus 1 and Poliovirus 1, protozoan oocysts Crytosporidiu parvum, and cyst simulant latex beads. Additional tests were conducted at the University of Arizona UA to determine the viability of Cryptosporidium parvum oocysts after exposure to the Pre-Mac iodine iodine, and to evaluate Pre-Mac water purifiers fitted with second generation 1.0 micron fine mesh filters for physical removals of cysts from product water. Studies used the U.S. Environmental Protection Agencys interim Guide Standard and Protocol for Testing Microbiological Water Purifiers for guidance. Results indicated that bacteria and viruses were readily removed by the Pre-Mac filter units. However, test results from inhouse studies and UA studies indicated that the Pre-Mac water purifiers were not adequate to physically remove or reduce infectious levels of protozoan cysts to meet the 3-log reduction criteria

Subject Categories:

  • Microbiology
  • Water Pollution and Control

Distribution Statement:

APPROVED FOR PUBLIC RELEASE