should be a Flow Chart in the paperwork that came with the mask, nearly all mask interfaces come with them. Once you find that flow chart, you first find your pressure say its 9cm. I do not have that flow chart My mask did not come with it You look on the mfg supplied Flow Chart and find your press...

My mask did not come with any literature. If someone is willing to share that chart, I really appreciate that. Thanks!

Hello,
I am a new cpap user. I would like to know how to calculate the true leak rate. I have a Respironics M Series PRO + Optilife. I have been looking for Optilife's leak rate -or vent flow rate- I have not been able to find it.

Any tips are welcome

Thanks