Pipette tips rack

Pipette tips racks organize disposable tips in labs, ensuring accuracy and preventing cross-contamination.

About this subject

A pipette tips rack is an essential accessory in molecular biology, chemistry, and clinical diagnostics laboratories. It accommodates disposable tips in a vertical orientation, enabling quick and secure attachment to pipettes. Common materials are medical-grade polypropylene and polycarbonate, which withstand autoclaving at 121°C without deformation. Many racks feature color codes for volume differentiation (10 µL, 200 µL, 1000 µL) and include hinged lids to protect tips from dust and aerosols.

Standardization follows ANSI/SBS guidelines, which define dimensions for compatibility with pipettes from brands such as Eppendorf, Gilson, and Thermo Fisher. Some racks are recyclable and can be reused after proper sterilization. An interesting detail is that empty racks are often repurposed as microtube holders or small-item organizers in labs.

During the COVID-19 pandemic, demand for tip racks surged as RT-PCR molecular tests required precise volumes and frequent tip changes to prevent contamination. High-throughput laboratories use 96- or 384-well racks that align directly with PCR plates, streamlining workflows.

Frequently Asked Questions

What types of tips fit in these racks?

Racks are designed for specific tip volumes, such as 10 µL, 200 µL, and 1000 µL. Many models are universal and compatible with major pipette brands.

Can the racks be autoclaved?

Yes, most polypropylene racks withstand autoclaving at 121°C. However, polycarbonate racks may have limitations; always check manufacturer specifications.

Why do some racks have lids?

The lid protects tips from aerosol, dust, and droplet contamination, which is critical for sensitive experiments like PCR and cell culture.