Fluorescent Brightener FP FBA 378 Fluorescent Brightener EBF FBA 185 Fluorescent Brightener ER-I FBA 199 Fluorescent Brightener ER-II FBA 199:1 Fluorescent Brightener OB FBA 184 Fluorescent Brightener OB-1 FBA 393 Fluorescent Brightener KCB FBA 367 Fluorescent Brightener KSN FBA 368 Fluorescent Brightener CBS-X FBA 351