contact us
- Email :
- sales@icc.ltd
- Phone :
- +86-335-7064518 ;+86-335-7513879
- Address :
-
Xihu Road 1,HaiGang District, Hebei Province,China 066000
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Witness samplesWitness samples
Witness samples allow testing without handling the actual part, to ensure the coating process is accurate before moving forward with the optical component. And after coating, the witness samples are often used to measure reflectivity, transmission, and polarization, as well as humidity, temperature, durability, and salt fog tests. The witness material is should be the same as the substrate material and is almost always the industry standard of roughly 1” (25 mm/25.4mm) in diameter to accommodate the size of standard spectrophotometers tooling .
