Axygen® SCT-15ML-25-S 15 mL Conical Centrifuge Tube, Screw Cap, Sterile, Bulk Packed — 25/Sleeve, 500/Case

Product Description

The Axygen® SCT-15ML-25-S is a 15 mL sterile polypropylene conical centrifuge tube with threaded screw cap — cylindrical tube shape, conical bottom, black printed graduations at 0.5 mL intervals with a large white marking spot, maximum RCF 12,000 × g. Sterile, nonpyrogenic, and DNase-/RNase-free. Bulk packed — 25 tubes per sleeve, 500 tubes per case (20 sleeves). Catalog # SCT-15ML-25-S.

SCT-15ML-25-S — Decoding the Catalog Number

Screw Cap Design — Secure, Leak-Resistant Closure The threaded screw cap of the SCT-15ML-25-S provides a more secure, leak-resistant seal than standard snap-cap conical tubes — critical for applications involving extended incubation, transport, centrifugation at high RCF, and repeated freeze-thaw cycling where snap caps can loosen or fail. The screw cap format also allows controlled, one-handed loosening to vent pressure before fully opening — an important safety feature when working with heated or pressurized samples. For labs that have experienced snap cap failures during high-speed centrifugation or thermal cycling, the SCT-15ML-25-S screw cap design provides the additional closure security needed for demanding applications.

SCT-15ML-25-S vs. Standard Snap-Cap 15 mL Conical Tubes — When to Choose Screw Cap:

12,000 × g Maximum RCF — High-Speed Centrifugation Compatible Maximum RCF is 12,000 × g. The robust polypropylene construction of the SCT-15ML-25-S withstands centrifugal forces up to 12,000 × g — covering high-speed centrifugation protocols for bacterial cell pelleting, protein precipitation, nucleic acid precipitation, and other applications requiring forces well above the standard benchtop centrifuge range. For labs running high-speed spin protocols in 15 mL conical format, the 12,000 × g RCF rating of the SCT-15ML-25-S provides the structural integrity required for reliable tube performance at elevated centrifugal forces.

Black Printed Graduations at 0.5 mL Intervals — Precise Volume Monitoring Black printed graduations and a large white marking spot. The 0.5 mL graduation interval provides fine-scale volume monitoring throughout the full 15 mL capacity — allowing accurate visual estimation of fill volume during sample loading, centrifuge pellet resuspension, and serial dilution steps without requiring a separate volumetric measurement. The large white marking spot provides a clear, high-contrast writing surface for sample labeling directly on the tube with permanent marker — eliminating label slippage and adhesion issues in cold and wet environments.

Sterile, Nonpyrogenic, DNase-Free, RNase-Free Sterile, nonpyrogenic and DNase-/RNase-free. The SCT-15ML-25-S meets the purity standards required for sterile cell culture, nucleic acid handling, and other sensitive biological applications where contamination from nucleases or non-sterile surfaces would compromise results. The sterile format qualifies the SCT-15ML-25-S for direct use in BSL cell culture workflows, sterile RNA and DNA handling, and any application requiring sterile 15 mL conical tube format.

Bulk Packaging — 25 Per Sleeve, 500 Per Case Bulk packed — 25 tubes per sleeve, 500 tubes per case (20 sleeves). The bulk packaging format of the SCT-15ML-25-S provides a cost-effective, high-volume supply for labs consuming 15 mL conical tubes routinely. Bulk packaging reduces per-tube cost compared to individually wrapped or racked formats — making the SCT-15ML-25-S the economical choice for high-throughput labs, core facilities, and any environment where 15 mL conical tubes are consumed in large quantities daily.

Key Features

• Axygen® Conical Centrifuge Tube — Catalog # SCT-15ML-25-S
• 15 mL capacity
• Polypropylene (PP) construction
• Cylindrical tube shape, conical bottom
• Threaded screw cap — secure, leak-resistant closure
• Maximum RCF: 12,000 × g
• Black printed graduations — 0.5 mL intervals
• Large white marking spot — high-contrast labeling surface
• Sterile
• Nonpyrogenic
• DNase-free and RNase-free
• Bulk packed — 25 tubes per sleeve
• 500 tubes per case (20 sleeves)

Supported Applications Bacterial cell pelleting by centrifugation, sterile cell culture sample handling, nucleic acid precipitation and pelleting, protein precipitation by centrifugation, sample transport and storage at 15 mL scale, buffer preparation and aliquoting, serial dilution in 15 mL format, RNA and DNA extraction intermediate steps, clinical sample processing, pharmaceutical QC sample handling, and any 15 mL conical tube application requiring sterile screw cap closure with high-speed centrifugation compatibility up to 12,000 × g.

Technical Specifications