36-Position Centrifuge Tube Storage Box for 15 mL Conicals — PPC, Green, 2/Bag (240-6615-G3D)
These 36-position storage boxes from Caplugs® Evergreen are precision-molded from polypropylene for organized benchtop staging, freezer storage, and transport of standard 15 mL conical centrifuge tubes. Each well holds tubes upright in a defined position, eliminating the tipping, label-obscuring, and cross-contamination risks of loose tube storage in drawers or trays. Supplied non-sterile in bags of two boxes, part number 240-6615-G3D is compatible with Thermo Fisher, Eppendorf®, and Corning Falcon® 15 mL conicals as well as many Caplugs® Evergreen tube families.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 240-6615-G3D |
| Tube Size / Format | 15 mL conical centrifuge tubes |
| Well Positions | 36 |
| Material | Polypropylene (PP) |
| Color | Green |
| Sterility | Non-Sterile |
| Pack Size | 2/Bag |
| Autoclave Compatible | Yes — 121°C / 15 psi |
| UV Decontamination | Yes — standard 254 nm UV cycle |
| BPA / Phthalate | BPA-free; no phthalate plasticizers |
| Country of Origin | USA |
Applications
- Benchtop tube staging during sample processing, aliquoting, and high-throughput pipetting workflows
- Freezer archiving at −20°C for biorepository and biobank specimen management
- Color-coded batch tracking — green designation integrates with laboratory color-coded workflow systems to signal completed or safety-cleared tube sets
- BSL-2 clean-bench environments requiring autoclave or UV decontamination between uses
- Transport of capped 15 mL conicals within the lab or between departments, keeping tubes upright and labeled faces visible
- Single-use-per-batch allocation for experiment traceability without reuse overhead
Compatibility
The well geometry of these boxes is dimensioned for the standard 17 mm outer diameter of 15 mL conical centrifuge tubes, providing positive tube retention by gravity without requiring excessive insertion or removal force. Verified compatible formats include Thermo Fisher Scientific, Eppendorf®, and Corning Falcon® 15 mL conicals, as well as the Caplugs® Evergreen 240-2448 and 240-2469 tube families (PS and PPC), the 220-2448-01K threaded bulk tube (cap must be tightened before boxing), the 222-3010 sterile conical family, and 10–15 mL transport vials from the Caplugs® Evergreen 240-3010 family (10 mL vials fit with minor lateral play due to their smaller OD). Standard 16 × 100 mm and 16 × 125 mm culture tubes with a 16 mm OD will also seat in the wells — verify height against box depth before use. Because tube OD tolerances vary by manufacturer, Caplugs® Evergreen recommends validating fit with a sample bag before committing to a bulk purchase if using non-standard tube formats.
Chemical Resistance
| Reagent / Condition | Compatibility |
|---|---|
| Aqueous buffers / saline | Excellent |
| Dilute acids and bases | Excellent |
| Alcohols (ethanol, isopropanol) | Good — short-term contact; prolonged exposure not recommended |
| Acetone / chlorinated solvents | Not recommended |
| Aromatic solvents (toluene, xylene) | Not recommended |
| Frozen storage (−20°C) | Compatible |
| Autoclave (121°C / 15 psi) | Compatible |
Quality & Procurement
Made in USA, these Caplugs® Evergreen storage boxes are manufactured from virgin, BPA-free, phthalate-free polypropylene under ISO 9001 quality management. The resin is FDA-compliant and free of latex. LabSupplies.com is an authorized Caplugs® Evergreen dealer stocking these boxes in USA inventory, enabling same-business-day shipping on qualifying orders. Volume and institutional pricing is available for clinical labs, biorepositories, and research facilities with ongoing procurement needs — contact our team for tiered quotes.
Frequently Asked Questions
Can these boxes be autoclaved between uses?
Yes. The polypropylene construction withstands standard autoclave cycles at 121°C / 15 psi, making these boxes suitable for decontamination before reuse or disposal in BSL-2 and clean-bench environments.
Will these boxes fit Thermo Fisher and Eppendorf® 15 mL conical tubes?
Yes — the 36-well grid is dimensioned for the standard 17 mm outer diameter shared by Thermo Fisher, Eppendorf®, Corning Falcon®, and most generic 15 mL conical centrifuge tubes. If your tubes are from a less common supplier, verify the OD before bulk ordering.
Are the boxes suitable for long-term freezer storage?
Yes. Polypropylene retains its structural integrity at −20°C, so these boxes are well suited to biorepository and biobank archiving. The flat base allows loaded boxes to stack, maximizing freezer shelf density.
Why green? Does color have a functional meaning?
The green color supports color-coded laboratory workflow systems, where distinct colors are assigned to sample batches, processing status, or hazard designations. Green is commonly used to signal a completed or cleared status. If you manage multiple tube sizes, Caplugs® Evergreen also offers a complementary 16-position box for 30 mL conicals in a contrasting color, enabling matched procurement across both formats from a single vendor.