Instruments that measure ultraviolet and/or visible light absorbance of a sample; they are based on the Beer-Lambert law, which states that the concentration of a solute is proportional to the absorbance of the sample. Accessories available.
The Variable-Angle Specular Reflectance Accessory can be used to obtain a spectrum of any flat, reflecting surface on plate or sheet material. Measurements of reflectance are useful in quality control of optical materials and for obtaining information about the crystalline structure of a material. The Variable-Angle Specular Reflectance Accessory can be used to: Measure reflection spectra of dielectrics at optimum angle Measure reflection-absorption spectra of thin films Measure refractive index and thickness of thin films Measure refractive indices from reflectance spectra using the Kramers-Kronig transformation
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Semi-Demountable Cell Windows are rectangular windows and come in a variety of window materials. Each window measures 41 (H) x 23 mm (W), and they come in pairs. These windows require, but do not include, the Universal Demountable Cell (L1270986).
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This auxiliary reference position is compatible with the LAMBDA 25/35/45 spectrometers. It includes a power supply, power cables, and user's guide. Requires the LAMBDA 25, 35, 45 Accessory Board (L6000500).
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Infrared windows allow for support of microsamples for infrared analysis with microscopes, such as PerkinElmer's Spotlight Systems. These windows are available in the following infrared crystals: BaF2, KBr, NaCl, and ZnSe.
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With the simple-to-use Front Surface Accessory, fluorescence and phophorescence measurements can be taken by placing samples directly on the accessory. You can, however, use the included powder window sample holders (52123164) for solid samples or cuvettes (not included) to measure small sample sizes (under 10 mm) of opaque or turbid samples.
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