Volumetric pipettes are designed to be highly accurate for a specific volume. They can be used to transfer that volume of liquid for use in creating a solution or dilution., Made of high quality Borosilicate Glass., Markings are made in permanent amber stain diffused into the surface of the glass for better visibility and durability, These pipettes have a large bulb with a long narrow portion above with a single graduation mark as it is calibrated for a single volume