Globe Scientific Stackable PC Microcentrifuge Rack - 0.5mL / 1.5mL / 2.0mL, 24-Place, 5 Colors

Sample storage organization in a freezer is a different problem than bench tube organization — freeze-thaw cycles demand materials that don't crack at -80°C, and vertical stacking efficiency matters when every cubic inch of freezer space has a cost. Globe Scientific's stackable polycarbonate (PC) microcentrifuge tube racks are built for both: PC construction rated to -80°C remains dimensionally stable through repeated freeze-thaw cycles without the brittleness that makes polystyrene a poor choice for frozen storage, and the stackable design allows multiple racks to be coupled vertically into a larger workstation on the bench or nested into freezer box compartments.

Available for 0.5mL microcentrifuge tubes (456330 series, 24-place) and 1.5mL / 2.0mL microcentrifuge tubes (456335 series, 24-place), both at $31.70/EA in five colors — Blue, Clear, Green, Orange, Yellow — all same price. The 24-place format is compact enough for individual sample sets and storage row assignment, and the stackable coupling allows two or more racks to be physically connected for bench organization without losing color-coded lot assignment.

Features and Benefits

• Polycarbonate Construction, Rated to -80°C: PC maintains structural integrity at ultra-low freezer temperatures where polystyrene and some polypropylene formulations become brittle. These racks hold their dimensional form through repeated -80°C freeze-thaw cycles, making them appropriate for long-term frozen sample storage as well as bench processing.

• Stackable/Couplable Design: Racks can be stacked vertically or coupled laterally to form a larger multi-rack workstation on the bench — preserving the color-coded organization of individual racks while creating a unified workspace footprint for large sample sets processed across multiple racks simultaneously.

• Two Tube Sizes Covered: 0.5mL format (456330) for reaction plates and small-volume samples; 1.5mL / 2.0mL format (456335) for the most common molecular biology and cell biology microcentrifuge tube sizes. Both formats available in the same five colors at the same $31.70/EA price.

• 5 Colors for Sample Set Organization: Blue, Clear, Green, Orange, and Yellow — all same price — enable color-coded organization by extraction batch, storage date, experiment, or priority tier without additional cost for color selection.

• Autoclavable for Sterile Workflows: PC racks can be autoclaved for decontamination between sample sets, supporting use in sterile technique environments including tissue culture, molecular cloning, and any workflow requiring hot-cycle equipment decontamination.

Specifications

Laboratory Applications

• Ultra-low temperature (-80°C) sample storage where PC construction survives repeated freeze-thaw cycles without cracking or deformation — keeping sample sets organized and labeled in the freezer using color-coded rack assignment by batch, date, or study

• Molecular biology and genomics workflows using 1.5mL and 2.0mL microcentrifuge tubes for DNA/RNA extraction, PCR setup, enzyme reactions, and sample dilution series where stackable racks create organized, expandable bench workstations

• Sterile technique environments where autoclave-compatible racks are required — tissue culture, cloning, and sterile sample processing labs that hot-cycle decontaminate all reusable equipment between experimental runs

Frequently Asked Questions

Can these racks be used at -80°C?
Yes. The polycarbonate construction is rated for storage and use down to -80°C. PC maintains its structural integrity at ultra-low temperatures where materials like polystyrene become brittle and crack. These racks can be moved directly from -80°C storage to bench temperature without cracking.

Can the 0.5mL and 1.5/2mL racks be stacked together?
The 456330 (0.5mL) and 456335 (1.5/2mL) racks use the same coupling mechanism and can be stacked or coupled with racks from the same series. Cross-stacking between 0.5mL and 1.5/2mL formats should be verified for fit before relying on it in a production workflow.

Why polycarbonate rather than polypropylene for -80°C storage?
Standard PP can become brittle at -80°C after repeated cycles. PC is a higher-impact-resistance plastic with better low-temperature performance, maintaining dimensional stability across the -80°C to ambient temperature range needed for freeze-thaw workflows. If you only need bench use or -20°C storage, PP racks are equally suitable and often less expensive.

Quality Assurance

Globe Scientific products are manufactured under strict ISO 9001:2015 certified quality systems. Designed to meet the demanding requirements of clinical and research laboratories, these products undergo rigorous inspection to ensure consistent performance and reliability.

Academic and Institutional Pricing

LabSupplies.com offers tiered quantity pricing for academic and research institutions. As an authorized dealer, we ship directly from USA inventory.