Microcentrifuge Tube Racks, 96-Well, Non-Sterile, PP, Yellow — 240-6388-Y30 | 5/Pack | Caplugs® Evergreen

1.5 mL & 2.0 mL Microcentrifuge Tube Racks — 96-Position, PP, Yellow, 5/Pack (240-6388-Y30)

These 96-position microcentrifuge tube racks from Caplugs® Evergreen are molded from virgin polypropylene in yellow and hold standard 1.5 mL and 2.0 mL microcentrifuge tubes in an 8 × 12 grid with 9 mm center-to-center well spacing matching the SBS microplate footprint. Supplied non-sterile in packs of five, they are built for organized tube management across PCR setup, sample archiving, centrifuge loading, and high-throughput screening workflows. A compatible dust cover lid (part 300-6388, sold separately) enables stacking and storage protection between processing steps.

Technical Specifications

Applications

• PCR setup and staging: the SBS-footprint grid enables direct integration with 96-channel pipetting workstations and automated liquid-handling platforms that address tubes in plate-coordinate format
• Genomics and library preparation workflows requiring dedicated, color-coded experiment lanes
• Clinical and blood-bank sample organization, where yellow corresponds to the ACD tube color convention
• Compound screening and biobank archiving in high-throughput laboratory environments
• Centrifuge loading and unloading, with positive-retention wells that allow smooth one-handed tube management during rapid pipetting
• BSC and clean-bench work requiring UV decontamination between runs

Chemical Resistance

Quality & Procurement

Made in USA, these racks are manufactured by Caplugs® Evergreen from virgin, BPA-free, phthalate-free polypropylene under ISO 9001 quality management. The yellow pigment is compounded directly into the PP matrix — not a surface coating — ensuring permanent color stability through autoclave cycles, alcohol wipes, and UV decontamination without fading or pigment migration. LabSupplies.com is an authorized Caplugs® Evergreen dealer stocking the complete 240-6388 color family (Natural, Blue, Orange, Green, Lavender, Red, and Yellow), enabling full color-scheme procurement from a single vendor for multi-user and multi-project lab organization. Orders ship from USA inventory.

Frequently Asked Questions

Can these racks be autoclaved between experiments?
Yes. The polypropylene construction is fully compatible with standard gravity and vacuum autoclave cycles at 121°C / 15 psi, making rack-per-experiment protocols practical without sacrificing color coding.

Will these racks work with automated liquid handlers that use standard 96-well microplate coordinates?
The 8 × 12 grid and 9 mm center-to-center well spacing match the SBS microplate footprint, so many automated pipetting workstations that address microcentrifuge tubes in plate-coordinate format can work directly with these racks. Verify your instrument's deck requirements and tube-adapter specifications before integrating into an automated workflow.

What is the significance of the yellow color, and can I use these racks for purposes other than ACD/blood-bank samples?
Yellow aligns with the CLSI H3 ACD blood-bank tube convention and is a common color choice in that setting, but the color is not exclusive to any application. Many labs assign yellow racks to a specific project, user, or processing lane — the high-visibility color simply makes it easy to distinguish active lanes on a busy bench.

Is a lid available, and do loaded racks stack?
Yes. The 300-6388 PPC Natural lid (sold separately, 5/Pack) is the compatible cover for these racks. It provides dust protection during storage and incubation steps and allows stacking of loaded racks to conserve bench space.