For measuring gas production in fermentation experiments.
Made of autoclavable borosilicate glass. Consists of a vertical tube with closed rounded top about 13mm o.d. and 100mm long. Graduated to 50mL in 0.1mL subdivisions. Tol. +0.10mL. Approximate o.d. of the bulb is 30mm and its capacity is greater than that of the vertical tube.