Made of borosilicate accurate bore glass tubing. Calibrated at 20°C. Pipettes are graduated for delivery from zero mark to the last graduation mark. Sturdy, designed to last long. Markings are made in permanent amber stain diffused into the surface of the glass for better visibility and durability.  Capacity available 0.1/0.2/1/2/5/10/25. We have transfer volumetric pipettes available with various class.