Modifies a ColorFlex Sample Cup Port to add a 400-nm Ultra-Violet (UV) cut-off filter under the drop-down lip of the port. This effectively cuts off the UV below 390-nm for UV optically brightened opaque powders, liquids, and translucent creams. The filter controls the UV output of the lamp to allow consistent measurement of the base color of the sample.

Important Notes:

See attached addendum for more information.

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