Feature

●<br>Material: Colorless, transparent borosilicate glass.<br>Alkali elution volume: 0.008 oz (0.2 mg) Na2O or less (JIS R3502 test method).<br>Flatness: 0.004 in (0.010 mm) or less (JIS R3702 test method).<br>Refractive Index: ne = 1.5255 ± 0.0015.<br>Abbee number: γe = 56 ± 2.<br>
●Thickness: 0.004 - 0.007 inches (0.12 - 0.17 mm).<br>Quantity: 1 box (1,000 pieces).<br>Size: 0.7 x 0.7 inches (18 x 18 mm).<br>No. 1.


Description

Material: Colorless transparent, boroacate glass
Alkaline ejection amount: 0.008 oz (0.2 mg) Na2O or less (JIS R3502 test method)
Flatness: Less than 0.004 in (0.010 mm) (JIS R3702 test method)
Refractive Index: ne = 1.5255±0.0015
Number of Abbees: Game=56±2
Thickness: 0.004 - 0.007 inches (0.12 - 0.17 mm)
Quantity: 1 box (1,000 sheets)
Size: 0.7 x 0.7 inches (18 x 18 mm)
No.1