Use Of Burette Stopcock

The tubing tube is an instrument that accurately measures and releases liquid volume, which is a measuring (EX) glass meter.

According to its different volume, it is divided into constant, semi -tray and trace tube. The most commonly used in constant titration tubes are the titration tube of 50ml (20 ° C), and its difference (1 small grid) is 0.1ml, and the readings can be estimated to be 0.01ml. In addition, there are 100ml and 25ml constant titles, which are also 0.1ml. The tube with a volume of 10ml and a scale of 0.05ml is called a semi -micro tube. Trace tube tube is a titration tube used for small volume liquids. There are various specifications (1 ~ 5) ML, and the points value is 0.01ml or 0.02ml.

The tubing tube is divided into acid titles and alkaline titles according to its purpose. The acidic tubing tube is suitable for acid and oxidized solution, which is not suitable for alkaline solutions. It is difficult to rotate because the glass piston is easily corroded by alkaline solution. The alkaline tube tube is suitable for alkaline solutions and anaerobic solutions. The lower mouth of the acid titration tube piston and the coat and the alkaline titration tube should have the same coordinated number as the pointed glass tube to prevent misplace. Some solutions (such as potassium permanganate, iodine, silver nitrate and other solutions such as potassium permanganate, iodine, silver nitrate and other solutions) cannot be used. When the acid tube is not used for a long time, the piston site should be put on paper. When the alkaline -type drip tube is not used, the rubber tube should be pulled out.