These automatic titrating burettes (burets) feature graduations according to category b (tolerances according to DIN EN ISO 385). the included bottle, tube, and Stopcock are made of polyethylene, polypropylene, natural rubber, and borosilicate glass wetted parts. Precise dosing using press button dispensing constructed with a borosilicate glass 3.3 burette (burette) flexible left- or right-handed operation possible accurately titrate with the micro-screw and discharge jet designed with a 25 ml capacity.