There are four most common type of pipette tips that are used in laboratories.
Standard Tips – these are your standard pipette tips. You will find, however, that most standard pipette tip users are now moving to low retention tips.
Low Retention Tips – these tips have an inner surface specially developed to keep sample binding to a minimum. This ensures maximum recovery of the sample resulting in high accuracy.
Filter Tips – these types of tips are used to protect the pipette from aerosols making their way up into the pipette helping to prevent cross contamination.
Gel-Loading Tips – these tips are ideal for use with SDS gels or agarose samples. They are generally longer tips and allow for easy loading of gel electrophoresis samples.