NSG Precision Cells has launched a photometric calibration filter for stray light.
UV VIS Photometric and Stray Light Spectrophotometer Calibration Filter
These filters are used to check the performance of stray light of spectrophotometers in the UV and the VIS range.
The filter is integrated with solid state nano-deposition and features neutral density (ND). Normally, the liquid filters monitor the performance of stray light of spectrophotometers in 3 regions of the UV range and 2 to 3 regions of the VIS range. Based on the type of spectrophotometer, five or six stray light liquid filter kits are normally used for verification of stray light performance.
The novel stray light filter is capable of checking the spectrophotometer’s stray light performance in both the VIS and the UV range. Since only one filter is needed, a lot of time is saved during testing of spectrophotometers for its stray light performance.
Some of the advantages of the stray light filter include 0.5 optical density, is better than VIS and UV calibration standards, satisfies or exceeds NIST-930e needs, need not be recalibrated if used properly and highly accurate and reliable. Neutral densities in the VIS and UV ranges can be tested from 200-700 nm, its standard size is 12.5 x 12.5 x 45 mm and is compatible with a range of spectrophotometers.
The calibration filter can be used for a number of years without the need for replacement.
This filter uses nano-deposition and nano-embedded technology that overcomes previous non-linearity across the filter surface and increases its lifetime.