There are so many portable water filters being made in China now, it is hard to know which ones have actually been tested – and more importantly, by who and what standards/criteria (World Health Organization or ?).
Below you will find a list of the test results (reports) I was able to find for the water filters on Portablewaterfilters.org.
If you are buying a water filter and no test results are available – I highly recommend you don’t buy it. You have no way of knowing it can do, what it claims, and the risks associated.
Portable Water Filter Test Results – PDF Reports
Katadyn (unable to locate third party certified lab results – disappointing)