The DPT™ Sampler is Madison Instruments, Inc. Dual Pass Transmission Sampler. Use this accessory positioned in the 2x3 inch sample holder found in most popular FTIRs. This is the same sample holder used to mount transmission cells and pellet holders in the spectrometer. The sample is introduced on the DPT™ Sample Card that consists of a patented Low-E Microscope Slide mounted in a safe paper slide holder. For many samples this is the quickest and least expensive sampling method available.

Use the low cost and disposable DPT™ Sample Cards as a substrate for your sample when running reflection ⁄ absorption experiments. For a typical reflection ⁄ absorption experiment, the sample is deposited on the reflective surface of the DPT™ Sample Card. Using a specular reflectance accessory to analyze the sample, the beam passes through the sample, reflects off the surface of the card, and passes through the sample layer a second time before exiting.