[catherine]

What is the advantage of FTIr-ATR?  I am using ATR, I am just putting sample on top then get the IR.  Can I use it if my sample is dry film?  Does the thickness of the film will affect my reading?  Is it the same reading if I will not use the ATR? 
Thank you in advance....

[PolymerKnowHow]

What is the advantage of FTIr-ATR?  You can measure the surfaces of films, liquids, or gels without much sample prep

Can I use it if my sample is dry film? It depends on the film and its surface properties

Does the thickness of the film will affect my reading? No

Is it the same reading if I will not use the ATR? No

[catherine]

thanks....

[PolymerKnowHow]

thanks....

no problem, one other thing worth mentioning is that I have had varying success with measuring polymeric films. We also had the "budget" crystal which could have been the source of these problems.

[catherine]

Actually i am measuring emulsion resin film.  I thing, i am going to use it to characterize my surfactant used in the emulsion....