5.0 mL Round-Bottom Polypropylene Centrifuge Tubes, 12 × 75 mm, Yellow — 214-2367-Y30 | 1000/Bag
These 5.0 mL polypropylene round-bottom tubes measure 12 × 75 mm and are supplied non-sterile in a 1000/Bag pack for high-throughput laboratory workflows. Yellow integral pigmentation enables rapid color-coded sample tracking — by analyte class, patient cohort, or shift — without the need for additional labeling. Unlike polystyrene equivalents, the polypropylene construction of 214-2367-Y30 delivers full compatibility with acetonitrile, methanol, and elevated temperatures, making these tubes the preferred choice whenever organic solvents or heating steps are part of the protocol.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 214-2367-Y30 |
| Capacity | 5.0 mL |
| Dimensions | 12 × 75 mm |
| Geometry | Round Bottom |
| Material | Polypropylene (PP) |
| Color | Yellow |
| Closure | Open Top |
| Sterility | Non-Sterile |
| Pack Size | 1000/Bag |
| BPA / Phthalate / Latex | BPA-Free, Phthalate-Free, Latex-Free |
| Country of Origin | USA |
Applications
- Organic-solvent sample preparation — including acetonitrile and methanol co-solvent reactions where polystyrene tubes are incompatible
- Solid-phase extraction (SPE) eluate collection under SPE columns or manifolds using ACN or MeOH mobile phases
- Water-bath incubations up to 80 °C in standard 12 × 75 mm tube racks
- Serial dilutions and reagent preparation in manual or automated dilution workflows
- Centrifugation of clinical matrices (serum, plasma, whole blood) in 12 × 75 mm rotor adapters
- Color-coded analyte-class or patient-cohort differentiation in high-throughput laboratory environments
- Colorimetric and enzyme-kinetics assays where polypropylene optical clarity is adequate for direct reading
- Microbiological culture inoculation using aseptic technique (tubes are supplied non-sterile)
Chemical Resistance
| Reagent / Condition | Compatibility |
|---|---|
| Aqueous buffers / saline | Excellent — inert across pH 2–12 |
| Dilute acids (HCl, H₂SO₄, <10%) | Good — suitable for SPE wash and reaction media |
| Dilute bases (NaOH, <10%) | Excellent — PP preferred over PS for caustic reagents |
| Methanol / acetonitrile (<100%) | Excellent — full compatibility; key advantage over PS |
| Ethanol / IPA (<100%) | Excellent — compatible for extraction and fixation |
| Ethyl acetate | Limited — short-term contact only; avoid prolonged exposure |
| Dichloromethane / chloroform | Not Compatible — causes cracking; do not use |
| Serum / plasma / whole blood | Excellent — standard clinical matrix handling |
Quality & Procurement
Made in USA from FDA-compliant, food-contact-grade polypropylene resin, these tubes are produced under ISO 9001 quality management controls and are certified BPA-free, phthalate-free, and latex-free. LabSupplies.com is an authorized Caplugs® Evergreen dealer stocking these tubes in USA inventory for same-business-day shipment on qualifying orders, with volume pricing available for institutional purchasers and grant-funded laboratories placing multi-bag orders.
Frequently Asked Questions
Can these tubes be used with acetonitrile or methanol?
Yes — polypropylene provides full compatibility with acetonitrile and methanol, which is the primary reason to choose these tubes over polystyrene equivalents. Avoid chlorinated solvents such as dichloromethane or chloroform, which will cause cracking.
Are these tubes sterile, and can they be autoclaved?
These tubes are supplied non-sterile. Polypropylene is autoclavable, so users who require sterility can autoclave them before use; however, the tubes are not certified or validated as sterile from the factory. For microbial culture work, apply standard aseptic technique.
What does the yellow color indicate?
The yellow pigment is integral to the polypropylene — it will not leach into samples. Yellow is commonly used in color-coded laboratory systems to distinguish analyte classes, patient cohorts, or shift assignments. It does not indicate a specific volume or closure type; the distinguishing specs are the 5.0 mL capacity and 12 × 75 mm round-bottom geometry.
What centrifuge rotor or rack fits the 12 × 75 mm format?
These tubes are sized to the standard 12 × 75 mm footprint accepted by a wide range of clinical centrifuge rotor adapters and tube racks. Confirm your centrifuge adapter and rack specifications against the 12 mm outer diameter and 75 mm length before use, as rotor compatibility varies by manufacturer and model.