61KiB, 500x298, women disgust.png View SameGoogleiqdbSauceNAO Anonymous Tue 15 Dec 13:06:01 2020 No.12467982 ViewReplyOriginalReport Quoted By: what crystals of FT-IR ATR can be used for studying plastics' chemical composition? daimond? germanium too? what about ZnSe? and how do i know what crystal is made of?