Mica-Discs

V1 Quality: Clear - Hard, of uniform color, nearly flat, free of all stains, foreign inclusion, cracks, and other similar defects. Recommended for AFM and SPM calibration.

V2 Quality: Clear and Slightly Stained - Hard, of uniform color, nearly flat and may contain slight crystallographic discoloration, and very slight air inclusions and not more than one fourth of the usable area. Recommended for AFM and SPM calibration.

V4 Qualtiy: Good Stained - Hard, of uniform color, may contain medium waves slight crystallographic discoloration, and medium air inclusion in not more than two-third of the usable area. Recommended for some AFM-studies where HOPG are used to taking place.

V5 Quality: Stained A Quality - Hard, may contain medium air inclusions, uniformly distributed in the usable area, slight green vegetable stains, medium waviness, and heavy waves if specified. Recommended for some AFM-studies where HOPG are used to taking place.

V4 Qualtiy: Good Stained - Hard, of uniform color, may contain medium waves slight crystallographic discoloration, and medium air inclusion in not more than two-third of the usable area. Recommended for some AFM-studies where HOPG are used to taking place.