In article <u8Rvc.37046$zO3.8344 at newsread2.news.atl.earthlink.net>, "Chuck Szmanda" <cszmanda at earthlink.net> wrote: >A relatively low cost very compact spectrometer can be bought from Ocean >Optics. > We've had good luck with a Shimadzu 1601 (I don't know if that model is still made). It's used by students in lab and has stood up well.