1.5 mL Tube Racks, HDPE, Yellow, Eppendorf® Compatible — 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, with tiered pricing available for institutional and grant-funded accounts.

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.