We use the aerogen with our Servo I vents. Our policy states we are to use a filter on the exp side of the circuit. It should be changed as needed. It seems when we use the aerogen and fail to use the filter or fail to change it regularly we get have issues with the cassette. It will read pressures and volumes wrong. We then have to change out the cassette. Does anyone have any ideas on how to combat the problem, i.e a filter they use or even if they have had the problem. Thanks

The Servo-Guard filter works well. Are you humidifying your circuits? What filters are you currently using?

We use humidity with the both limbs being wired. I cannot remember the brand of filter.