BOD-bottle, 300 ml, Pennyhead-stopper, Ø 69 x H 165 mm, 1 unit(s)BOD bottle, 300 ml, Pennyhead stopper, 69 x H 165 mm Material: borosilicate glass acc. to USP type I. With labelling area. For determination of the biochemical oxygen requirement. The extension at the bottle neck holds water displaced by stoppers or electrodes and thus protects against air entering the bottle. Neck inside 16. 5 mm. Delivery incl. stoppers. Technical Information Vol. 300 ml 69 mm Height 165 mm Stopper type Pennyhead