Quote Originally Posted by Justin View Post
We didn't say they WERE filters, we said they WERE CALLED filters. But thank you very much for the lesson anyway, always appreciate a smart arse
Well I searched hi and lo to find an answer on google and there did not seem to be an answer as to what they are called. I think that they were ultimately designed to be a filter as I have seen them with filter paper in the flyingsaucer shaped bit. As supplied however with my cartridges they have no filter material and they seem to be sealed so cannot be opened to put filter material in. In fact as they are they seem to have no advantage over just removing the bung as they do not stop anything entering the holes. As they would say 'as bout as useful as a chocolate teapot'