This Reference Material can be used to qualify the wavelength calibration, in the ultraviolet and visible regions of the spectrum (240 nm - 650 nm*) of spectrophotometers with spectral bandwidths of (SBW) 5 nm or less. It is accepted for this purpose by most Pharmacopoeias and Standardisation Bodies, including:
Deutsches Arzneibuch (German Pharmacopoeia).
United States Pharmacopeia
American Society for Testing and Materials
Therapeutic Goods Administration (Australia)
*This range can be extended to 200 nm - 650 nm for instruments with 1 nm SBW or less