Suction flask, 2 liter capacity Vacuum-resistant flask made of Duran 50 glass with plastic safety hose nipple according to the German Industrial Standard no. 12476. Outer diameter of the hose nipple, 9 mm. Inner diameter of the opening, 60 mm. Stoppers are not enclosed. A 1 liter capacity flask is available for countries which do not have safety restrictions on glass hose nipples.
For collecting the filtrate, vacuum-resistant borosilicate glass, 3.3 (Duran 50 glass).