20-Position Centrifuge Tube Racks for 30 mL & 50 mL Tubes — PS, Green, 6/Bag (240-3500-G10)
These polystyrene centrifuge tube racks hold up to 20 tubes in the 30 mL and 50 mL conical format, making them a single-rack solution for the two most common large-volume tube sizes used across clinical, research, and biotech workflows. Supplied non-sterile in a 6/Bag bulk format, the green color allows straightforward color-coded organization across multi-rack workstations. Caplugs® Evergreen part 240-3500-G10 is lot-numbered for full traceability in regulated laboratory environments.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 240-3500-G10 |
| Product Type | Centrifuge Tube Rack |
| Tube Compatibility | 30 mL & 50 mL conical centrifuge tubes |
| Positions | 20 |
| Material | Polystyrene (PS) |
| Color | Green |
| Sterility | Non-Sterile |
| BPA / Phthalate Free | Yes |
| Lot Traceability | Yes — lot-numbered per bag |
| Pack Size | 6/Bag |
| Country of Origin | USA |
Applications
- Staging and holding 30 mL or 50 mL conical tubes during centrifugation runs in clinical chemistry and molecular diagnostics labs
- Aliquoting and reagent preparation workflows where both tube formats are used interchangeably
- Cell culture media handling and cell pellet processing in biotech and research settings
- Specimen batch organization and short-term incubation in microbiology and serology labs
- Color-coded rack systems that distinguish assay types, sample batches, or departments across shared workstations
- Laboratory storage organization for completed runs or archived specimens
Chemical Resistance
| Reagent / Condition | Compatibility |
|---|---|
| Aqueous buffers / saline / water | Excellent |
| Dilute acids and bases | Good — short-term contact |
| Ethanol (>70%) | Not recommended |
| Acetone | Not recommended |
| Chlorinated / aromatic solvents | Not recommended |
| Autoclaving | Not recommended — PS is not autoclavable |
Quality & Procurement
Made in USA, these racks are manufactured by Caplugs® Evergreen under ISO-certified quality standards with consistent polystyrene geometry and color uniformity across every production lot. Every bag is lot-numbered to support documentation requirements under CAP, CLIA, and ISO 15189 accreditation programs. The racks are BPA-free and phthalate-free. LabSupplies.com is an authorized Caplugs® Evergreen dealer shipping from USA inventory, with tiered pricing available for high-volume institutional and grant-funded purchasing.
Frequently Asked Questions
Will these racks hold both 30 mL and 50 mL conical tubes securely?
Yes — each rack is designed to accommodate both 30 mL and 50 mL conical centrifuge tubes across all 20 positions, so you can use a single rack format regardless of which tube size your workflow requires.
Are these racks sterile?
No — they are supplied non-sterile, which is appropriate for the vast majority of tube staging, aliquoting, and storage applications where rack sterility is not required.
Why is the rack green?
The green color enables color-coded workstation organization, allowing labs to assign specific rack colors to assay types, specimen batches, or departments — reducing handling errors in busy multi-rack environments without additional labeling.
Do these racks carry lot numbers for accreditation documentation?
Yes — every bag of 240-3500-G10 includes a lot number, supporting traceability documentation for CAP, CLIA, and ISO 15189 accredited laboratories.