Put your samples on a salt-free diet Tired of cleaning salt plates? Try quick and easy 3M Disposable IR Cards. These disposable sample cards fit major FTIR spectrometers and reduce time-consuming sample preparation. Samples are applied directly onto the microporous, polyethylene substrate, which quickly absorbs and holds the analyte. Since the cards are disposable, the risk of cross-contamination is eliminated. Likewise, no more sample clean-up translates into savings in both time and supplies. 3M Disposable IR Cards are non-hygroscopic and require ,, no special storage or handling. They work most favorably with I organic liquids, samples soluble in organic solvents, and Λ semisolids or pastes. The cards are especially effective with