EHEDG 2^nd Edition 2004 
ISBN: 0-9075-0314-4
Seiten / pages: 9
Preis Euro / price Euro: 119,00
EHEDG-Mitglied Euro / EHEDG-Member: 59,50

This document details the test procedure for assessing whether an item of food processing equipment, intended for aseptic operation, is impermeable to micro-organisms.  Small motile bacteria penetrate far more easily through microscopic passages than (non-motile) moulds and yeasts. The facultative anaerobic bacterium Serratia marcescens (CBS 291.93) is therefore used to test bacteria-tightness or the impermeability of equipment to micro-organisms. The method is suitable for equipment that is already known to be in-line steam sterilisable (see also Doc. 5).