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Spectroscopy is the study of matter and electromagnetic radiation such as X-rays, visible light, ultraviolet, infrared, and others; widely employed analytical technique using instruments designed for characterizing chemical species and samples.
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This N-BK7 neutral density filter is unmounted with a 1/2 in. diameter and an optical density of 0.6. It is designed for applications in the 350 to 2000 nm wavelength range, providing 25% nominal transmission. Inconel alloy coatings are vacuum-deposited on both surfaces for durability and uniform transmission.
Material: N-BK7
Unmounted diameter: 1/2 in.
Optical density (OD): 0.6
Nominal transmission: 25%
Wavelength range: 350 to 2000 nm
Clear aperture: >90% of diameter
Thickness: 2.0 ±0.1 mm
Parallelism: <30 arcsec
Surface quality: 40-20 Scratch-Dig
Inconel coating on both surfaces
Damage threshold: 100 W/cm² (CW) at 1064 nm; 0.5 J/cm² (10 ns pulse) at 1064 nm
Reflectivity: <2.5%
Filters are supplied with a plot of the measured transmission.
Encompass Procurement Services Non-distribution item offered as a customer accommodation; additional freight charges may apply. Learn More
Our economical scanning spectrophotometers produce first-rate results using any UV/visible analytical method. High-quality components and systems enable superior resolution, accuracy, and reproducibility. Specify method parametric setup using simple on-board keypad controls or from computer. View spectral graphics on backlit LCD. Sample compartment accommodates up to 8 cuvettes with pathlengths up to 100 mm. Store up to 30 user methods in non-volatile memory. Programmed methods include DNA/protein ratios (260/280 nm or 260/230 nm). Specify up to 10 wavelengths for multiple sample analysis or use the GLP protocol to verify wavelength and transmittance. Study reaction kinetics for up to 12 hours with sampling intervals down to every 0.5 seconds; use post-run re-scaling and curve/segment targeting to refine rate calculations.
Encompass Procurement Services Non-distribution item offered as a customer accommodation; additional freight charges may apply. Learn More