A test tube brush or spout brush is a brush used for cleaning Test Tubes and laboratory Glassware, such as graduated cylinders, Burettes, Beakers, Flasks etc. It is composed of nylon 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 or bronze, Lab brushes are designed to be resistant to acid and other corrosive chemicals, including aromatic and aliphatic hydrocarbons, ketones, ethyl acetate.
| Product Code | Brush length | Brush diameter | Overall length |
| MAS 2605-8 | 75 mm (3″) | 0.75mm (0.03″) | 250mm (10″) |
| MAS 2605-12 | 75 mm (3″) | 12 mm (0.5″) | 200 mm (8″) |
| MAS 2605-20 | 90 mm (3.5″) | 20 mm (0.75″) | 230 mm (9″) |
| MAS 2605-28 | 105mm(4.2″) | 28mm (1.12″) | 250mm (10″) |
| MAS 2605-35 | 100 mm (4″) | 35 mm (13/8″) | 275 mm (11″) |
| MAS 2605-40 | 115 mm (4.5″) | 40 mm (15/8″) | 330 mm (13″) |
| MAS 2605-45 | 80 mm (4.5″) | 45mm (1.8″) | 290mm (11.6″) |
| MAS 2605-50 | 115 mm (4.5″) | 50 mm (2″) | 330 mm (13″) |
| MAS 2605-70 | 190mm (7.6″) | 70mm (2.8″) | 460mm (18.4″) |
Brushes are designed for the purpose of cleaning test tubes, therefore are developed to be able to reach all corners of the glassware.
| Tip type | Description |
|---|---|
| Radial tip | Round tufted tip allows for a curved brush edge, protecting the glassware from contact against the twisted metal wire handle. |
| Stainless steel wire stem radial tip | Similar to radial tip brushes, but more durable and efficient in glassware cleaning. |
| Tied tip | Bristles are tied together at the tip to facilitate the cleaning of tubes and bottles with narrow openings, capable of expanding at the bottom of the tube without scratching the surface. |
| Sponge tip | The soft tip enables expansion and absorption of liquid, which results in more thorough cleaning of the tube and protection from scratches. |