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15 and 50mL Tubes

15 and 50mL Tubes

Our 15mL and 50mL conical centrifuge tubes are the essential workhorses of the modern laboratory, providing reliable performance for sample preparation, centrifugation, and long-term storage. These tubes are engineered to withstand extreme physical and thermal stress while maintaining the integrity of your valuable samples.

Why Choose Stellar Scientific Conical Tubes?

Unmatched Thermal and Mechanical Stability

Stellar Scientific offers standard-use tubes designed for both high-intensity spinning and ultra-low temperature storage. Our tubes are autoclavable and freezer-safe to -86°C, ensuring they remain structurally sound from the autoclave to the deep-freeze environment.

Versatile Packaging and Formats

To accommodate the specific needs of your workflow, our 15mL and 50mL tubes are available in several different formats. Choose the configuration that best fits your benchtop setup:

  • Bagged (Sterile): Cost-effective and convenient for high-volume use.

  • Foam Racked (Sterile): Provides stability and organization for rapid processing.

  • Self-Standing: Featuring a "skirted" bottom that allows the tube to stand upright without a rack.

Key Benefits of Our Conical Tube Selection

High-Speed Centrifugation Performance

For demanding protocols requiring intense separation forces, we carry high-speed conical tubes with a top-rated speed of 20,000 x g. These reinforced tubes are designed to prevent leaking or structural failure during high-velocity runs.

Specialized Solutions for Light-Sensitive Samples

Laboratories working with light-sensitive samples will appreciate our sterile black-out tubes. Equipped with tight-fitting screw-caps, these opaque tubes provide a total barrier to protect photosensitive reagents and samples from degradation.

Innovative SWiSH Integration

Maximize your efficiency by pairing our self-standing 50mL tubes with our SWiSH brand premium cell-strainers. This combination creates a super-fast, hands-free filtering system, allowing you to streamline your cell isolation and clarification workflows.

Key Buying Considerations for Conical Tubes

1. Cap Color and Identification

When you purchase a case of our 15mL and 50mL conical tubes, you will receive, by default, our signature midnight-blue cap tubes. For labs requiring color-coding for different projects or reagents, other available colors include:

  • Lime Green

  • Fire-Engine Red

  • Please contact us for specifics on these colors as they are priced differently.

2. Centrifugation Requirements

Verify the RCF (Relative Centrifugal Force) requirements of your protocol. While our standard tubes are robust for most applications, our 20,000 x g high-speed tubes are essential for specialized, high-force extractions.

3. Sterility and Packaging

Determine if your application requires the sterile convenience of foam racks or if bulk-bagged options better suit your lab's throughput. All our sterile formats are processed to ensure they meet the highest laboratory standards for cleanliness.

Frequently Asked Questions

Can these tubes be used with organic solvents? 

Our tubes are manufactured from high-quality polypropylene, which offers excellent resistance to many common laboratory chemicals. However, we recommend checking a chemical compatibility chart for specific aggressive solvents to ensure the best results.

What is the benefit of the self-standing (skirted) design? 

Self-standing tubes allow you to set the tube down on a flat surface during pipetting. This is particularly useful when working under a hood where space for racks might be limited, especially when combined with our SWiSH cell strainers for hands-free filtering.

How do I order the Green or Red cap versions? 

Because these specialized colors are priced differently than our standard midnight-blue caps, please reach out to our team directly. We can provide specific pricing and availability for your color-coding needs.

Are the graduations easy to read? 

Yes. Our tubes feature high-contrast graduations and a large writing area, making it easy to identify volumes and label samples clearly, even when wearing gloves or working in a fast-paced environment.

Secure Your Research Results Today

At Stellar Scientific, we are dedicated to supporting your lab’s success by providing the highest quality laboratory essentials. Upgrade your lab with our comprehensive range of 15mL and 50mL conical tubes today and experience unmatched precision and quality.

  • Expert Technical Support: Not sure which tube format or RCF rating fits your centrifuge? Our team is ready to provide compatibility guidance.

  • Flexible Ordering: Choose from sterile bagged, racked, or specialized color-coded options to fit your lab's specific needs.

  • Proven Precision: Rely on tubes built to support your lab's success from -86°C storage to 20,000 x g centrifugation.

  • Fast Shipping: Most conical tubes are in stock and ready to ship directly from our warehouse to keep your research moving.

Invest in your research with the durability and innovative design of Stellar Scientific consumables. Explore our catalog to find the perfect fit for your lab today. Contact us now to learn more about us!

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