I tried to filter only water through a standard 25mm 0.2 um syringe filter. Of course, it's easy to do this manually with the syringe, but I have several litters to pass. So I connected a peristaltic pump. To my surprise, the pump was unable to push the water through the filter. This is a very powerful pump that develops high pressure. What's wrong with it? Are we providing more pressure with our hand and syringe than the pump?
Has anyone tried pump assisted filtration through 25mm / 0.2um filters successfully?
Thanks