From: Hygienic safety of reusable tap water filters (Germlyser®) with an operating time of 4 or 8 weeks in a haematological oncology transplantation unit
Test parameter
cfu/ml
week 2
week 4
week 8
control before changing (final reduction %)
total bacteria 22°C
14.4
3.8
6.3
607 (99)
total bacteria 36°C
29.4
14.5
34.7
635 (94.5)
P. aeruginosa
0
0.06*
344 (97.5)
Moulds
1
0.1
5.2 (100)