GeoMan, if you’re not doing FTIR, then not only do you not need a ‘compliant surface’, you should use one. There’s no reason as it won’t due ANYTHING for you. A compliant surface (silicone, etc) is ONLY for FTIR.
I am using FTIR. Although I have no compliant surface at the moment, just bare acrylic, I still am able to use my setup. Now I am trying to figure out somewhat easier process to create a compliant surface.
