1. 標準光学研磨 (赤外分光グレード)
(Polishing grade=Spectroscopic grade)
2. 寸法公差 外径、厚さとも±0.2mm
(Tolerance:Diameter ±0.2mm Thickness ±0.5mm)
3. Orientation : 無印
(no remarks)= Random cut
<111>,<100>= Oriented cut
4. 無印 = 両面研磨 (Both faces polished)
B/P = 片面研磨 (One face polished only)