30–50 mL Centrifuge Tube Storage Boxes — 16-Position, Polypropylene, Orange, 2/Bag (240-6630-E3D)
These 16-position centrifuge tube storage boxes are precision-molded from virgin polypropylene (PP) to organize, stage, and store 30 mL conical centrifuge tubes securely upright on the benchtop, in the freezer, or during transport. Each well is dimensioned for the standard 30 mL conical tube outer diameter, providing positive retention by gravity so tubes seat and release cleanly without tool assistance. Supplied non-sterile in a pack of 2, part number 240-6630-E3D is compatible with autoclave decontamination at 121 °C and UV decontamination at 254 nm, making it suitable for BSL-2 and clean-bench environments.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 240-6630-E3D |
| Tube Size (Design Target) | 30 mL conical centrifuge tubes |
| Well Positions | 16 |
| Material | Polypropylene (PP) |
| Color | Orange |
| Sterility | Non-Sterile |
| Pack Size | 2/Bag |
| Autoclave Compatibility | Yes — 121 °C / 15 psi |
| UV Decontamination | Yes — standard 254 nm cycle |
| Freezer Storage | Yes — rated to −20 °C |
| BPA / Phthalates | BPA-free; no phthalate plasticizers |
| Country of Origin | USA |
Applications
- Benchtop staging of 30 mL conical tubes during centrifugation workflows in clinical and research laboratories
- Freezer archiving and biorepository storage at −20 °C, with the flat base enabling stacking to maximize shelf density
- Color-coded batch management — orange provides high-contrast visual identification for 30 mL tube sets in busy multi-format labs
- Autoclave decontamination before reuse or disposal in BSL-2 and clean-bench environments
- Transport of loaded conical tubes between processing stations without tube tipping or label contact
- Biobank and biospecimen archiving where defined tube position and sample traceability are required
Compatibility
The 16 wells in these boxes are sized for the standard 30 mL conical centrifuge tube format (approximately 25 mm OD), and will positively retain tubes from common suppliers including Thermo Fisher, Corning, and equivalent generic formats in that outer diameter. Large-format 50 mL conical tubes (approximately 30 mm OD) have a wider body and may not seat correctly — verify fit with a sample box before committing to a bulk order. Similarly, 25 × 150 mm borosilicate or plastic culture tubes with a 25 mm OD can physically fit the wells, but tube height should be confirmed to ensure the box closes or stacks as needed. For 15 mL conical tube storage, Caplugs® Evergreen offers a matched 36-position green box (240-6615-G3D), enabling color-coded procurement across both common conical formats from a single vendor. Always validate fit with a sample before placing a high-volume order when using non-standard container formats.
Chemical Resistance
| Reagent / Condition | Compatibility |
|---|---|
| Aqueous buffers and saline | Excellent |
| Dilute acids and bases | Excellent |
| Ethanol (≤70%) | Good — suitable for short-term surface contact and UV-ethanol decon cycles |
| Isopropanol (IPA, ≤70%) | Good — short-term contact |
| Acetone | Not recommended |
| Chloroform / chlorinated solvents | Not recommended |
| Aromatic solvents (toluene, xylene) | Not recommended |
| Autoclave steam (121 °C / 15 psi) | Compatible |
| Freezer storage (−20 °C) | Compatible |
Quality & Procurement
Made in USA, these Caplugs® Evergreen centrifuge tube storage boxes are manufactured from virgin, BPA-free, phthalate-free polypropylene under ISO 9001 quality management. LabSupplies.com is an authorized Caplugs® Evergreen dealer stocking these boxes in USA inventory for fast fulfillment, with tiered pricing available for high-volume institutional, clinical, and biorepository purchasing programs.
Frequently Asked Questions
Can these boxes be autoclaved between uses?
Yes. The polypropylene construction is rated for standard autoclave cycles at 121 °C / 15 psi, so the boxes can be decontaminated and reused or processed for disposal according to your facility's waste protocol.
Will 50 mL Falcon® or Corning conical tubes fit in these boxes?
The wells are dimensioned for the standard 30 mL conical tube outer diameter (approximately 25 mm). Standard 50 mL conical tubes have a wider body (approximately 30 mm OD) and may not seat securely. Request a sample box to verify fit before placing a bulk order.
Why is the box orange rather than a neutral color?
Orange enables color-coded tube batch management in multi-format labs. When used alongside the matched green 15 mL box (240-6615-G3D), staff can identify tube sizes instantly by box color, reducing handling errors during high-throughput workflows.
Are these boxes suitable for long-term freezer storage?
Yes. Polypropylene maintains its structural integrity at −20 °C, and the flat base allows loaded boxes to be stacked on freezer shelves to maximize storage density — making them well suited for biobank and biorepository archiving applications.