Even hospital machines don't get sterilized between patients. They may get the inline bacteria filter.Tom W wrote:I would hope that rental machines get sterilized between patients....
The Respironics M series manual says, "If the device is used by multiple persons (e.g., rental devices), a low resistance, main flow bacteria filter should be installed in-line between the device and the circuit tubing to prevent contamination."
By the way, an inline filter may affect the way a bilevel or machine with exhale relief works.