15 mL Centrifuge Tube Racks — 50-Position, Blue Polystyrene, 6/Bag (240-2500-B1N)
These 50-position polystyrene tube racks are designed to hold 15 mL conical centrifuge tubes securely upright during bench-top specimen processing, sample preparation, and clinical laboratory workflows. Supplied non-sterile in a convenient 6/Bag pack, the racks measure 130 × 90 mm and are molded in blue PS for lightweight rigidity and instant visual identification at the bench. Part number 240-2500-B1N is a Caplugs® Evergreen product Made in USA.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 240-2500-B1N |
| Tube Compatibility | 15 mL Conical Centrifuge Tubes |
| Number of Positions | 50 |
| Rack Dimensions | 130 × 90 mm |
| Material | Polystyrene (PS) |
| Color | Blue |
| Sterility | Non-Sterile |
| Pack Size | 6/Bag |
| BPA / Phthalate Free | Yes |
| Country of Origin | USA |
Applications
- Batch specimen processing in clinical chemistry, urinalysis, and hematology departments
- Upright tube organization during centrifugation prep, reagent dispensing, and sample aliquoting
- Microbiology and molecular biology workflows requiring stable, high-capacity tube staging
- Color-coded bench organization by specimen type, workflow step, or laboratory section in multi-rack setups
- Anatomic pathology and research laboratory tube handling where 15 mL conicals are used in volume
Chemical Resistance
| Reagent / Condition | Compatibility |
|---|---|
| Aqueous buffers / saline | Excellent |
| Dilute acids | Excellent |
| Dilute bases | Excellent |
| Methanol | Good — short-term contact |
| Acetonitrile | Limited — use with caution |
| Ethyl acetate | Not recommended |
| Aromatic / chlorinated solvents | Not recommended |
Quality & Procurement
Made in USA, these Caplugs® Evergreen racks are manufactured from BPA-free, phthalate-free polystyrene with lot-level quality controls ensuring consistent rack geometry, well dimensions, and color across every bag. LabSupplies.com is an authorized Caplugs® Evergreen dealer, shipping from USA inventory with tiered pricing available for high-volume clinical, hospital, and institutional purchasing programs.
Frequently Asked Questions
Will these racks hold standard 15 mL conical tubes from any brand?
Yes — the 50-position well geometry is sized for the industry-standard 15 mL conical centrifuge tube format used by virtually all major manufacturers. If you use non-standard or thick-walled tubes, verify the outer diameter before ordering.
Can these racks be autoclaved or disinfected with common bench disinfectants?
Polystyrene is not autoclavable. These racks are suitable for surface disinfection with aqueous-based disinfectants; avoid disinfectants containing high concentrations of alcohols, acetone, or aromatic solvents, which can craze or degrade PS.
Why does the blue color matter in a clinical lab setting?
Color-coded racks allow staff to designate racks by specimen type, workflow step, or laboratory section at a glance — reducing handling errors in busy multi-analyst environments without additional labeling.
How many racks come per bag, and is bulk pricing available?
Each bag contains 6 racks, making it straightforward to equip multiple bench stations from a single order. LabSupplies.com offers tiered pricing for institutional and high-volume procurement — contact our team for a quote.