Pipette tips rack

Pipette tips rack: organization and precision in laboratories, with dramatic lighting highlighting the equipment's functionality.

About this subject

A pipette tips rack is an essential item in molecular biology, chemistry, and clinical diagnostic laboratories. It stores disposable tips, keeping them sterile and organized for use with single-channel or multichannel pipettes. Most racks are made of polypropylene, a material resistant to autoclaving at 121°C, allowing reuse after sterilization. Models with 96 wells (microplate standard) are compatible with 8- or 12-channel pipettes, streamlining processes such as PCR, ELISA, and sequencing.

Racks can be sold with pre-loaded tips (sterile, filter tips) or empty for refilling. Capacity ranges from 60 to 384 tips, depending on the model. Some racks have hinged lids that protect against aerosol contamination. The Rembrandt lighting in the image creates deep shadows that highlight the plastic texture and precise alignment of the tips, a visual detail that evokes the precision required in laboratory measurements.

Selecting the appropriate rack depends on the tip type (volume: 0.1 µL to 10 mL; with or without filter) and the pipette used. Brands like Eppendorf, Gilson, and Rainin offer proprietary locking systems. In Brazil, laboratories in universities and hospitals often adopt universal racks for cost reasons. Proper tip organization prevents cross-contamination errors, crucial in diagnostics like COVID-19 RT-PCR, where thousands of samples are processed daily.

Frequently Asked Questions

How many tips does a standard rack hold?

The most common rack has 96 wells, holding 96 tips, but versions with 60, 384, or more are available depending on the application.

Can I autoclave a pipette tip rack?

Yes, if it is made of polypropylene. Most racks withstand autoclaving at 121°C for 20 minutes, as long as they are empty of disposable tips.

What is the difference between filtered and non-filtered tips?

Filtered tips have a polyethylene barrier that prevents aerosols and particles from passing through, reducing cross-contamination risk. They are recommended for PCR and DNA/RNA work.