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Appl Environ Microbiol. 1973 July; 26(1): 59-62
Copyright © 1973 American Society for Microbiology. All Rights Reserved.

Microbial Penetration Through Three Types of Double Wrappers for Sterile Packs

Microbiological Control Section, Epidemiology Program, Center for Disease Control, Atlanta, Georgia 30333

ABSTRACT

Microbial penetration of sterile packs was studied by using double-wrap (two layers each) muslin, single-wrap (two layers) muslin inner covering with single-wrap (one layer) two-way crepe paper outer covering, and single-wrap (two layers) muslin inner covering with single-layer BAR-BAC wrappers to wrap 20 gauze sponges (2 by 2 in.). These packs were stored on open shelves of a central sterile supply department of a hospital and processed for sterility at weekly intervals. Microorganisms penetrated the double-wrap muslin as early as 28 days, the single-wrap muslin and single-wrap two-way crepe paper combination in 77 days, and the single-wrap muslin and single-layer BAR-BAC combination in 63 days.