![cover image](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/3/3e/Test_tube_brushes.jpg/640px-Test_tube_brushes.jpg&w=640&q=50)
Test tube brush
From Wikipedia, the free encyclopedia
A test tube brush or spout brush is a brush used for cleaning test tubes and narrow mouth laboratory glassware,[1] such as graduated cylinders, burettes, and Erlenmeyer flasks. It is composed of nylon, synthetic, or animal fur bristles of various diameters lined against a rather sturdy wire handle with a looped end for hanging. The wire can be made from a wide range of metals, such as aluminium, bronze, beryllium, copper, and brass.[2] FDA grade brushes are designed to be resistant to acid and other corrosive chemicals, including aromatic and aliphatic hydrocarbons, ketones, ethyl acetate esters, and trichloroethylene.
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/3/3e/Test_tube_brushes.jpg/640px-Test_tube_brushes.jpg)