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Calibration Filter, Absorptive Neutral Density, 0.5 OD, 31.6% Trans.
The 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 with standard spectrophotometer cell holders.