for determining the degree of final fermentation. 250 ml 450 mm long, internal diameter: 42 mm/20 mm(Rubber stopper for fermentation tube according to lietz: ArtNr. 3050)
for determining the degree of final fermentation 750 ml695 mm long, Internal diameter : 55mm/20 mmsuitable rubber stopper for fermentation tube see ArtNr. 3050