DC-3 Diamond Compression Cell

Diamond Compression Cell | Solid FTIR Accessory


High-Pressure Solid Transmission spectroscopy cell

Specac’s high-pressure Diamond Compression Cell is designed for in-compartment FTIR spectroscopic transmission analysis and FTIR microscope analysis. Samples are compressed and flattened to a uniform thickness between a pair of diamond windows until the sample is thin enough for the FTIR instrument or microscope beam to penetrate. This type of cell is particularly useful for the analysis of hard samples, including minerals, rubbers, and rigid polymers. Minimal sample preparation is required, which means that samples are ready for direct FTIR spectroscopic analysis.

The Diamond Compression Cell consists of two stainless steel plates into which a pair of diamond windows is fixed using a high-strength and durable diamond-to-metal bond technology. The strength of this diamond mount facilitates a reduced thickness of diamond window (0.5 mm) to achieve the highest infrared optical throughput for this type of micro transmission cell.

Analysis of samples in an FTIR spectrometer may require the use of Specac's Microfocus Beam Condenser (ZnSe lenses, or KRS-5 lenses) to obtain the best quality spectra.

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  • Ordering
  • Documents
Diamond Compression Cell
  • DC-3 The DC-3 Diamond Compression Cell unit. GS02555
  • DC-3 Kit – ZnSe The DC-3 Diamond Compression Cell Kit, including the ZnSe Microfocus beam Condenser. GS02556
  • DC-3 Kit – KRS-5 The DC-3 Diamond Compression Cell Kit, including the KRS-5 Microfocus beam Condenser. GS02557
User Manuals


  • Flat, parallel Type lIIA diamond windows
  • 1.5 mm diameter clear aperture
  • High working pressure
  • Stainless steel body construction
  • Multifunctional for FTIR spectrometers and IR microscopes