Schott Duran Original round GL45 clear borosilicate. Bottle, laboratory, reagent / media, round, wide mouth, screw neck, borosilicate glass, 250ml (0.25L) capacity, 143mm overall height (with screw cap attached), 70mm outer diameter (at widest point), GL45 DIN thread, ISO 4796-1, USP Standard, with retrace code. Get Price.