Certified Standards

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Certified Standards

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Toluene in Methanol (265 – 270 nm)
Benzene Vapour (230 – 270 nm)
Neutral Density Filters (440 – 635 nm)
Samarium Oxide Solution (230 – 560 nm)
Combined Didymium/Neutral Density Glass
Combined Holmium/Didymium Oxide Solution (240 – 795 nm)
Combined Holmium/Neodymium Oxide Solution (220 – 865 nm)
Combined Holmium/Neutral Density Glass (360 – 640 nm)
Stray Light Specified Wavelength Method (200 – 390 nm)
Deep UV Reference (190 – 230 nm)
Metal-on-Quartz Neutral Density Filters (250 – 635 nm)
Starna Green Broadband References (250 – 650 nm)
Deep UV Reference (190 – 230 nm)
Combined Holmium/Neutral Density Glass (360 – 640 nm)

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