Guernsey Coating Laboratories’ M14 (Protected Silver Coating) on BK7, fused silica and silicon substrates were tested by SPICA in March of 2020. The M14 passed in accordance with MIL-C-48497A.

Results from testing are shown in the following documents (click for full size):

Moderate ABRASION
 

ADHESION
 

HUMIDITY
 

TEMPERATURE
 

POST TEMPERATURE ADHESION

Salt Fog