Launch of the Praying Mantis Diffuse Reflectance Accessory for Characterization of Small Solid Samples
Nov 28 2006
Diffuse reflectance accessories which use integrating spheres rely on sphere coatings, limiting the wavelength range in the ultraviolet region of the spectrum. The Praying Mantis accessory incorporates overcoated mirrors enabling the full wavelength range of the instrument to be used. Additionally, optional reaction chambers are available which extend the capabilities of the accessory, greatly expanding the flexibility of the system by allowing the researcher to study the characteristics of their samples at a wide variety of temperatures and pressures. Temperatures can be controlled from -150Â° C to 600Â° C, and variable vacuum control systems are available.
Furthermore, the Praying Mantis includes the ability to use the accessory with the spectrophotometer's sample compartment open, for convenience when mounting and removing samples. Also, the sample chamber can be purged with an inert gas such as dry nitrogen, allowing the diffuse reflectance characterization of samples that may be oxygen-sensitive or moisture-sensitive.
The Praying Mantis is available for the Evolution 300 spectrophotometer that has an upper wavelength range of 1100 nanometers; therefore, researchers can achieve the extended wavelength coverage in the near-IR (NIR) region from 800 to 1100 nm without having to purchase a more expensive UV-Visible-NIR instrument.
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