Pasteur pipettes are used to transfer small volumes of liquids and are not calibrated or marked with any volumetric guidelines. Volumetric pipettes allow for precise accuracy. Volumetric pipettes have long slender necks above and below a large bulb, with one graduation mark.
Universal pipette tips are disposable and designed to fit multichannel and single pipettes from many manufacturers. Compared to pipette specific tips, universal pipette tips offer high levels of performance and offer versatile uses with many pipette models.
Low retention tips are modified pipette tips that are specially designed to prevent the adhesion of enzymes, DNA, cells, proteins, as well as other viscous materials to their surface..