black ultraviolet glass Uviol glass 's style: ZWB1ZWB2ZWB3 it posses well uviol and it spreads in long wave and short wave,which style is ZWB1ã??ZWB2 ,ZWB3ï¼?254nm\310nm\365nmï¼?seperately and can absorb in the visible lightã??Mainly used for Gel imaging and analysis system,geological surveying, Nondestructive  testing, medical analytical instruments, UV light source filter and so on. comparitive type list of filter glass Comparitive Type List Of Filter Glass Our Optics TYPESCHOTT TYPEHOYA TYPE ZWB1UG11U340 ZWB2UG1U360 ZWB3UG5U330 If you can not find the comparitive type that you want above the table,please tell us the transmittance curve and we can help you to find the correct type. transmission curve