per la chimica 25ml 50ml di laboratorio di vetro alcali acido buretta

ABurette(returnBurette) is a vertical cylindrical laboratory glassware with volume graduations along its entire length and a precision tap or stopcock at the bottom. It is used for dispensing known quantities of liquid reagents in experiments that require this precision, such as titration experiments. Burette very precise - 50 cm³Burettes have a tolerance of 0.1 cm³(Grade B) or 0.06 cm³(Class A).

Titration syringes are also used for titration. These are calibrated to volumetric Class A tolerances equal to or better than traditional burette tolerances. Graduated burettes feature a thumb-operated plunger and PTFE seal that slides within the tube in positive displacement operation. This arrangement is provided to achieve improved reliability by eliminating the problems of air bubble entrapment during filling, leakage and clogging in the stopcock mechanism.