Drechsel type gas washing bottles, DIN 12596, conical standard ground joint size 29, bottle height 200 mm, working height 250 mm, bottles in SBW borosilicate glass 6.5, inserts in borosilicate glass 3.3 (not included in the scope of delivery).
With cone size 29, borosilicate glass 3.3, uniform overall height 200 mm, DIN 12463.