Color Comparison Tubes Colorimetric Cylinder Pipettes with Stoppers Pack of 6 (50ML)
- 1:Color comparison tubes are used for visually comparing solution sample colors..
- 2:Matched set of six tubes for consistent graduated-ring scale..
- Shadowless bottom transmits undistorted light.
- no dark spots form when tube is filled with liquid and viewed from the top using a light source beaneath the tube.