This Reference Material is designed for qualification of the Absorbance scale in the ultraviolet and visible spectrum range from 250 nm to 850 nm. It is suitable for spectrophotometers with spectral bandwidths not exceeding 10 nm.
The filters are produced by depositing a metallic coating of precise thickness onto a fused silica plate, determining their transmission properties. An optically bonded cover plate overlays the metallic surface to provide protection against oxidation, contamination, and physical degradation. These filters correspond to NIST SRM 2031c standards. The supporting filter holder is made of stress-free black-anodized aluminum alloy, equipped with sliding covers to protect the filter when not in use. Each reference or set is supplied with an empty filter holder serving as a measurement blank.
This Reference Material is designed for qualification of the Absorbance scale in the ultraviolet and visible spectrum range from 250 nm to 850 nm. It is suitable for spectrophotometers with spectral bandwidths not exceeding 10 nm.
The filters are produced by depositing a metallic coating of precise thickness onto a fused silica plate, determining their transmission properties. An optically bonded cover plate overlays the metallic surface to provide protection against oxidation, contamination, and physical degradation. These filters correspond to NIST SRM 2031c standards. The supporting filter holder is made of stress-free black-anodized aluminum alloy, equipped with sliding covers to protect the filter when not in use. Each reference or set is supplied with an empty filter holder serving as a measurement blank.
