ZFx

MedX

LX-57B

Lead equivalent [mmPb]

<1.5

Main component [Wt%]

Lead oxide (II) PbO

>55

<48

55

Silicon oxide SiO

<50

(37)

(37)

Potassium oxide K₂O

<10

-

-

Barium oxide BaO

-

<15

5

Others

Arsenic oxide < 5

Arsenic trioxide < 0.5

Boron oxide 3

Refractive index

1.71

1.76

1.71

Knoop hardness [kg/mm²]

370

440

370

Density [g/cm³]

4.46

4.8

<4.36

Transmittance [%] (wavelength 550 nm)

86

<85.0

88