Spectroscopy
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EPP 6135928001BioSpectrometer® Reference Filter Set, 7 filters (1 blank filter, 3 filters for checking UV/Vis wavelength systematic error and precision, 3 filters for photometric verification)
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EPP 6133928004BioPhotometer® D30 Reference Filter Set, 6 filters (1 blank filter, 2 filters for checking UV/Vis wavelength systematic error and precision, 3 filters for photometric verification)