Hi everyone; I read some of FTIR threads in forums and they were at the different parts of forums so I decided that it's the best place for this question. But if I am wrong please move the thread. I'm new for FTIR measurements. First of all I want to say that I'm doing this kind of measurements only for scientific purpose. I use an FTIR machine which operates under vacuum. I tried a holder/instrument but it is not useful due to the fact that it has no transmission at some wavelengths. What kind of holder/instrument are you using to measure liquid samples under vacuum? Where can I find these holders/instruments? Thanks for your help.