A. Boiling Flask, Round Bottom Made of borosilicate glass LBG 3.3 capacity Ø (mm) (mm) (mm) 50 ml 51 105 22 100 ml 64 115 22 250 ml 85 145 34 500 ml 105 175 34 1000 ml 131 210 42 2000 ml 166 260 50 B. Boiling Flask, Flat Bottom Made of borosilicate glass LBG 3.3  capacity Ø (mm) (mm) (mm) 50 ml 51 105 22 100 ml 64 115 22 250 ml 85 145 34 500 ml 105 175 34 1000 ml 131 210 42 2000 ml 166 260 50 3000 ml 199 370 50