1.5 mL Tube Racks, HDPE, Orange, Eppendorf® Compatible — 240-6388-E30 | 5/Pack | Caplugs® Evergreen

96-Position Microcentrifuge Tube Rack — PP, Orange, 1.5 mL & 2.0 mL Compatible (240-6388-E30)

The Caplugs® Evergreen 240-6388-E30 is a 96-position polypropylene microcentrifuge tube rack molded in orange, supplied 5 per pack for organized management of standard 1.5 mL and 2.0 mL microcentrifuge tubes. Its 8 × 12 grid layout matches the SBS microplate footprint at 9 mm center-to-center well spacing, enabling direct integration with automated liquid-handling platforms and 96-channel pipetting workstations that address tubes in plate-coordinate format. Supplied non-sterile and autoclavable at 121 °C, these racks are built for repeated decontamination cycles without dimensional distortion or color loss.

Technical Specifications

Applications

• PCR setup staging: organize pre- and post-amplification tubes in a standard 96-well plate footprint to streamline pipetting workflows
• Sample archiving and storage: hold labeled 1.5 mL or 2.0 mL tubes in a consistent positional format for biobanking and specimen management
• Centrifuge loading preparation: batch-load microcentrifuge tubes efficiently before spinning to minimize handling time
• BSL-2 and high-risk sample workflows: orange color convention provides immediate visual identification of biohazard or priority-alert sample sets in mixed-priority environments
• Automated liquid handling: SBS-format grid allows 96-channel pipetting workstations to address tubes directly in plate-coordinate format
• BSC and clean-bench organization: UV decontamination compatibility supports biosafety cabinet use between experiments

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 orange pigment is compounded directly into the PP matrix — not applied as a surface coating — ensuring permanent color stability through autoclave cycles, alcohol wipe-downs, and UV decontamination without fading or pigment migration. The 240-6388 family spans seven colors (Natural, Blue, Orange, Green, Lavender, Red, and Yellow), enabling complete color-scheme procurement from a single vendor for multi-user and multi-project lab organization. LabSupplies.com is an authorized dealer and ships from USA inventory, with tiered pricing available for institutional, hospital, and grant-funded laboratories.

Frequently Asked Questions

Can these racks be autoclaved between experiments?
Yes. The polypropylene construction is fully compatible with standard steam autoclaving at 121 °C / 15 psi, making them suitable for repeated decontamination cycles without warping or color degradation.

Do these racks fit both 1.5 mL and 2.0 mL microcentrifuge tubes?
Yes. The 9 mm center-to-center well spacing accommodates standard microcentrifuge tubes with an 11 mm OD, which covers both the 1.5 mL and 2.0 mL format used by Eppendorf® and most compatible tube brands.

Is a lid available to cover loaded racks during storage or incubation?
Yes. The 300-6388 PPC Natural lid is sold separately in a 5/Pack and is designed specifically to fit this rack, providing dust protection and allowing stacking of loaded racks.

Why choose orange instead of a neutral color?
Orange is a widely recognized visual alert color in clinical and research settings. It is commonly used to flag biohazard samples, BSL-2 culture work, or any tube set requiring priority attention in a mixed-workflow environment — making it easy for staff to distinguish high-risk or high-priority samples at a glance without additional labeling.