para laboratorio 25ml 50ml acido alcalino vidrio Bureta

• Type:laboratory apparatus
• Classification:BURET
• Brand Name:LY
• Model Number:LY
• Place of Origin:Zhejiang, China
• Product name:para laboratorio 25ml 50ml acido alcalino vidrio Bureta
• Material:Glass
• Color:Clear
• Usage:Laboratory Test
• Condition:New
• Capacity:25/50ml
• Subject:Chemical
• Warranty:1 Year
• End User:Senior school
• Certificate:CE/ISO9001

Aburette(alsoburet) is a vertical cylindrical piece of laboratory glassware with a volumetric graduation on its full length and a precision tap, or stopcock, on the bottom. It is used to dispense known amounts of a liquid reagent in experiments for which such precision is necessary, such as a titration experiment. Burettes are extremely accurate - a 50 cm³ burette has a tolerance of 0.1 cm³ (class B) or 0.06 cm³ (class A).

Also used for buretting are buretting syringes. These are calibrated to Volumetric A grade tolerances which are equal to or better than the traditional burette tolerance. The graduated buretting tube is provided with a thumb operated piston and PTFE seal which slide within the tube in a positive displacement operation. This arrangement is provided to achieve improvements in reliability, by removing problems of bubble entrapment while filling, leaks and blockages in stopcock mechanisms.