Efficiently absorb high-energy ray
Transparent defence radiates shielded material
is used in radioactive working place

 X-ray Y-ray has the glass of greater absorption force

Density is 6.2 ∼ the glass of 6.5 g/cm3, use frequently there are ZF series

InY- ray role is not easy the optical glass of coloration 

In K509, the content of CeO2 is approximately 0.4% ∼ 0.5% , In K709, CeO2 is approximately 1%.

Is used in radiation working place generally. hospital Laboratory etc.