Reliable shielding, clear view The composition of RD30 radiation shielding glass from SCHOTT can be compared with solid lead and ensures excellent protection against gamma and x-rays. Lead oxide accounts for 22 percent of the weight of RD30. This makes this leaded x-ray glass a transparent alternative to other shielding materials. Crystal clear and effective leaded x-ray glass Thanks to its high density, RD30 radiation shielding glass achieves high x-ray absorption even when it is thin. It meets the requirements of the German Institute for Standardization, European Standardization, and the International Electrotechnical Commission. RD30 satisfies the requirements of DIN EN 61331-2 and IEC 61331-2.