Product warning. Today there is a press released in the Netherlands about the MSR ceramic filter used in the miniworks, with model #35422 and 356210. Apparently new tests have detected bacteria to grown through the filter in certain conditions. Cascade Designs recommends you to boil the ceramic after 4 days of use.

Please read the manufacture press release on details, on boiling you ceramic. I have not been able to find this press release other than in Dutch.

the dutch press release can be found here:
http://www.vwa.nl/portal/page?_pageid=119,1639824&_dad=portal&_schema=PORTAL&p_news_item_id=22366