Standard Size

Thicknesses

1150*850m㎡

0.7-25.4 mm

1150*850m㎡

16.0-21.0 mm

1150*850m㎡

3.3-15.0 mm

Water resistance   according to ISO 719/DIN 12 111           HGB1

               according to ISO 720                 HGB1

Acid resistance     according to ISO 1776/DIN 12 116  (at least)3

Alkali resistance   according to ISO 695/DIN 52 322   (at least)A 2

Wavelength λ (nm)

           Refraction index n

453.8

1.48015

479.9

1.47676 (n_F’)

546.1

1.47311(n_e)

589.3

1.47133

643.8

1.46953 (n_C’)

656.3

1.46916

Abbe number (v_e=(n_e–1)/(n_F‘– n_C‘))

65,41

Refraction index (n_d (λ_{587,6 nm}))

1,47140

Dispersion (n_F– n_C)

71,4 x 10^-4

Stress-optical coefficient (K)

4,0 x 10^-6 mm² N^-1