This Reference Material is designed to qualify the Absorbance scale of spectrophotometers operating in the ultraviolet, visible, and near-infrared spectral regions from 250 nm to 3200 nm. It is suitable for instruments with spectral bandwidths not exceeding 6.5 nm, with certification values measured at 1 nm bandwidth.
The filters consist of a quartz plate coated with a metallic layer whose thickness determines the transmission characteristics. This metallic surface is protected by an optically bonded cover plate, offering enhanced durability against oxidation, contamination, and physical damage compared to typical overcoating methods. Filters are housed in stress-free, black-anodized aluminium alloy holders equipped with front and rear sliding covers for protection when not in use. Each filter or set is supplied with an empty holder as a measurement reference.
This Reference Material is designed to qualify the Absorbance scale of spectrophotometers operating in the ultraviolet, visible, and near-infrared spectral regions from 250 nm to 3200 nm. It is suitable for instruments with spectral bandwidths not exceeding 6.5 nm, with certification values measured at 1 nm bandwidth.
The filters consist of a quartz plate coated with a metallic layer whose thickness determines the transmission characteristics. This metallic surface is protected by an optically bonded cover plate, offering enhanced durability against oxidation, contamination, and physical damage compared to typical overcoating methods. Filters are housed in stress-free, black-anodized aluminium alloy holders equipped with front and rear sliding covers for protection when not in use. Each filter or set is supplied with an empty holder as a measurement reference.
