FTIR spectroscopy: Sampling accessories to boost your research

12 May 2022

Fourier-transform infrared (FTIR) spectroscopy is used to probe the molecular vibrations of a sample, generating a chemical fingerprint from the molecules present within the beam of light. The technique has been employed in numerous ways across multiple fields, but whatever the aim of the experiment, an accessory is required to contain the matter under study and direct the light onto it.

In this application eBook, we review the literature for some of the most advanced FTIR spectroscopy products and explore cutting-edge research across a diverse range of fields, including sections on:

Liquid transmission analysis – from the analysis of biodiesel blends to the detection of fake fish oil
Attenuated total reflectance – the basics, penetration depth, advanced measurements, and more
Advanced spectroscopy – including catalytic studies and the spectroscopy of gases

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Storm™ Short Pathlength Gas Cell
Specac Ltd
Specac offers a Short Pathlength Gas Cell that is ideal for routine gas and vapour spectroscopic analysis at room temperature, low pressures, and static or flow conditions. The cell has a fixed 10 cm pathlength, and is available in Pyrex™ and stainless steel. This Short Pathlength Gas Cell is supplied with a choice of NaCl, KBr, CaF2, BaF2, or ZnSe infrared transmission windows, and is mounted in an optical spectrometer with a version of 3” by 2” slide mount holder. Pyrex™ and PTFE taps are used on the Pyrex™ version of cell, whilst stainless steel and Viton® sealed valves are used on the stainless steel version of cell, to introduce samples to the cell. Features & benefits: Demountable for ease of cleaning and window replacement Choice of cell material: Pyrex™ and stainless steel Choice of window materials Window diameter: 47mm Clear aperture: 39mm Two ports for static or flow experiments Slide mounted cell holder
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Arrow™ Consumable Silicon ATR
Specac Ltd
A silicon ATR consumable technology which helps you zero in on your analysis. Zero cleaning. Zero risk of cross-contamination. Zero hassle.
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Pearl Liquid Transmission Accessory
Specac Ltd
FT-IR spectroscopy's latest innovation in liquid transmission analysis
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Golden Gate® diamond ATR
Specac Ltd
The Golden Gate® is a robust option for demanding single-reflection ATR applications. It features a brazed diamond ATR crystal and a signature “Golden Gate” sample loading bridge. More advanced top-plate assemblies are available for in-situ, high- and low-temperature work.
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Quest diamond ATR
Specac Ltd
The Quest™ ATR is a single-reflection ATR accessory from Specac designed for routine use in academic and industrial laboratories. With features designed to inspire confidence in the quality of results and reliability in use, this product sets the benchmark in performance and value in FTIR-ATR Spectroscopy.
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Variable Temperature Cell Holder
Specac Ltd
The Variable Temperature Cell Holder is the ideal accessory to use for the transmission study of liquid or solid samples over a broad range of temperatures. The cell consists of a vacuum jacket that contains a refrigerant dewar/cell holder assembly and a heating block that contains the appropriate cell, and allows variable temperature over the range from -190°C to 250°C. NaCl windows are provided as standard on the cell holder, but a range of other UV, Vis, NIR and Infared transmitting window materials are also available. This transmission cell holder is designed for use with Specac’s Advanced Liquid or Solid Transmission Cells, Spectroelectrochemical Cell, or High Pressure Liquid Cell. The cell holder is installed into an optical spectrometer sample compartment either via the 3"" x 2"" slide mounting plate, or with a Benchmark™ baseplate.
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High Temperature High Pressure Cell (HTHP)
Specac Ltd
Specac’s High Temperature High Pressure Cell (HTHP) Accessory is a multipurpose cell for the FTIR analysis of solid samples in transmission, decomposition, or specular reflectance modes. Sample temperatures up to 800ºC can be obtained and the cell can operate at pressures from vacuum (0.1 torr) to 1000 psi for in-situ reaction studies. The standard HTHP Cell (GS05850) can be used for transmission analysis of 13 mm diameter discs, or for decomposition spectral analysis of gases evolved from a solid sample held in a sample cup just below the beam height. Spectral reflectance measurements are facilitated by an alternative baseplate configuration with transfer optics, and with one of the standard window housings replaced with an angled window housing assembly. The parts required for this conversion are available as an upgrade kit GS05860, or provided as standard if the HTHP Cell is been ordered as the advanced version (GS 05855). Gas connections on the cell are provided for gas flow or purging purposes. The HTHP Cell is manufactured predominantly from corrosion resistant and vacuum compatible materials. ZnSe windows and silicone seals are used as standard, but other window materials and seals can also be provided. Temperature control of the accessory is provided by a dedicated power controller.
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