Heathrow Scientific Corrugated PP Cryogenic Freezer Box for 15mL Tubes - 120391 Series | 36-Place

Freezing 15 mL conical tubes in a standard cardboard box means dealing with soggy cardboard, lost dividers, and tubes that topple the moment you pull the box from the rack. The Heathrow Scientific Corrugated Polypropylene Cryogenic Freezer Box for 15 mL Tubes solves all three problems with a waterproof, flat-pack polypropylene box that includes a pre-assembled 36-place (6 × 6) divider grid with 19.8 mm wells. The taller 4.7-inch profile accommodates the full length of a 15 mL conical, and the rigid corrugated walls prevent the box from collapsing under stacked weight in a crowded freezer. Rated to −80 °C and sold in packs of 10, it's the practical upgrade from disposable cardboard for labs that freeze-store conical tubes at scale.

Features and Benefits

• 36-Place Grid (6 × 6): Wells sized at 19.8 mm diameter to fit standard 15 mL conical centrifuge tubes securely upright.

• Tall 4.7-Inch Profile: Full-height accommodation for 15 mL conicals — no tubes sticking above the box or requiring an oversized lid.

• Corrugated Polypropylene: Waterproof, mold-proof, and substantially more durable than cardboard in humid freezer environments.

• Flat-Pack with Included Dividers: Ships flat for space-efficient delivery, assembles instantly, dividers pre-fitted.

• −80 °C Rated: Structurally sound in ultra-low temperature mechanical freezers through repeated freeze-thaw access cycles.

Specifications

Laboratory Applications

• Freezer archiving of 15 mL conical tubes containing cell pellets, concentrated nucleic acids, and tissue homogenates at −80 °C

• Clinical specimen storage for centrifuged serum, plasma, and body-fluid samples collected in 15 mL format

• Replacing cardboard boxes in labs that experience rapid box deterioration from frequent freezer door openings and high ambient humidity

Frequently Asked Questions

Will 15 mL Falcon-style conical tubes fit?
Yes. The 19.8 mm wells accommodate standard 15 mL conical centrifuge tubes from all major manufacturers including Corning, Thermo Fisher, and Globe Scientific.

Is this the same footprint as the microtube corrugated boxes?
The 15 mL version has a slightly larger footprint (5.8 × 5.7 in vs. 5.2 × 5.1 in) and is significantly taller (4.7 in). Verify your freezer rack bay dimensions accommodate this larger format.

Can I autoclave corrugated PP boxes?
No. Corrugated polypropylene is not designed for autoclave temperatures. For autoclavable conical-tube storage, use rigid polypropylene containers rated to 121 °C.

Quality Assurance

Heathrow Scientific corrugated polypropylene boxes are manufactured from waterproof, mold-resistant material and inspected for fold-line integrity, divider fit, and dimensional accuracy.

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.