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Optikos - Anywhere Light Goes Blog - LB 2/23

Witness Samples


ULC’s complete line of optical witness samples are ideal to use as coating witness samples for environmental testing and measuring spectral performance. They are a cost-effective choice when the same material type is required as your substrate.
ULC manufactures witness samples in a variety of 185+ materials.
Witness Samples

United Lens Co. Inc.
259 Worcester St.
Southbridge, MA 01550-1325
United States
Phone: +1 508-765-5421
Fax: +1 508-765-0500
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