Calibration Filters

AC00050000 (AC-500) is a Holmium Oxide Filter, mounted in a precision holder designed to be compatible with standard spectrophotometer cell holders. The Holmium Oxide filter is used for wavelength accuracy verification. Read More

MC00005000 (MC-50) is a Metallic Neutral Density Filter (evaporated Inconnel on a Fused Silica substrate) with nominal transmittance of 31.6% (0.5 OD), calibrated using NIST certified secondary standards, and mounted ... Read More

AC00001000 (AC-10) is an Absorptive Neutral Density Filter with nominal transmittance of 79.4% (0.1 OD), calibrated using NIST certified secondary standards, and mounted in a precision holder designed to be compatible... Read More

CS00025500 (CS-255) is a set of Ultraviolet and Visible Spectrum Calibration Filters. It includes three (3) calibrated metallic neutral density filters, one (1) Holmium Oxide filter, and one (1) blank filter holder, ... Read More

AC00003000 (AC-30) is an Absorptive Neutral Density Filter with nominal transmittance of 50.1% (0.3 OD), calibrated using NIST certified secondary standards, and mounted in a precision holder designed to be compatible... Read More

AC00005000 (AC-50) is an Absorptive Neutral Density Filter with nominal transmittance of 31.6% (0.5 OD), calibrated using NIST certified secondary standards, and mounted in a precision holder designed to be compatible... Read More

AC00009900 (AC-99) is a Blank Filter Holder with identical dimensions to the holders used to mount our Calibration Filters. It is typically used for calibration of dual-beam spectrophotometers to balance the beam ... Read More

AC00010000 (AC-100) is an Absorptive Neutral Density Filter with nominal transmittance of 10.0% (1.0 OD), calibrated using NIST certified secondary standards, and mounted in a precision holder designed to be ... Read More

CS00025000 (CS-250) is a set of Visible Spectrum Calibration Filters. It includes four (4) calibrated absorptive neutral density filters, one (1) Holmium Oxide filter, and one (1) blank filter holder, packaged in a ... Read More

MC00001000 (MC-10) is a Metallic Neutral Density Filter (evaporated Inconnel on a Fused Silica substrate) with nominal transmittance of 79.4% (0.1 OD), calibrated using NIST certified secondary standards, and mounted ... Read More

MC00010000 (MC-100) is a Metallic Neutral Density Filter (evaporated Inconnel on a Fused Silica substrate) with nominal transmittance of 10.0% (1.0 OD), calibrated using NIST certified secondary standards, and mounted... Read More