These large evaporator flasks are used with Heidolph 20L rotary evaporators

They are fabricated from blanks selected for balance and quality. The necks are carefully welded to prevent “rotational whip.” Fabricated from borosilicate glass. Flange A O.D. is 143mm. Flange B O.D. is 118mm. Flange C O.D. is 18mm.