Conical Centrifuge Tubes 50mL 100 Pack - Sterile Screw Cap Tubes

In this review the reviewer looks at the Conical Centrifuge Tubes 50mL 100 Pack and finds them best suited to laboratories, classrooms, and small-scale sample preparation where reliable, sterile containment and clear measurement matter most. The single biggest reason to buy is the combination of durable polypropylene construction and accurate printed graduation, which together make these tubes dependable for centrifugation up to 12,000 x g and convenient for routine measuring and labeling. The pack of 100 with screw caps and EO sterilization makes them a practical choice for repeat workflows.

Key Features

• Durable material: High purity polypropylene construction withstands autoclave conditions and supports centrifugation up to a max RCF of 12,000 x g for demanding lab steps.
• Sterilized on arrival: EO sterilization provides a sterile starting point so tubes are ready for use with biological samples, seeds, pills, powders or liquids.
• Leak-proof caps: Polyethylene screw caps seal securely to prevent spills and allow safe transport and storage of liquids and small solids.
• Precise graduation: Printed graduation marks run alongside the tube for accurate, easy-to-read volume measurements during sample preparation.
• Easy marking: Designated white write-on area makes labeling and identification quick and legible without extra stickers.

Who It's For

These 50 mL conical tubes are a solid choice for clinical labs, teaching labs, hobbyist biologists and small R&D teams that need a cost-effective, sterile tube capable of high-speed centrifugation. The printed graduations and write-on spot suit workflows where repeated measuring and clear sample ID are required.

Users who need specialized chemical resistance beyond polypropylene, pre-sterilized single-use disposables with barcodes, or certified clinical traceability documents should look elsewhere; this product is aimed at general lab and educational use rather than highly regulated diagnostic supply chains.

Pros & Cons

Pros

• Sturdy polypropylene construction performs well under autoclave and high RCF conditions.
• EO sterilized out of the box, making them ready for biological or sterile handling.
• Clear printed graduation and a white write-on area improve measurement accuracy and sample labeling.
• Caps seal reliably, reducing the risk of leaks during handling and storage.

Cons

• Not intended for highly regulated diagnostic workflows that require specialized certification or barcoding.
• Polypropylene has typical solvent limitations, so strong organic solvents may not be appropriate.

Specifications

Capacity	50 mL
Pack quantity	100 tubes
Material	High purity polypropylene
Maximum RCF	12,000 x g
Cap type	Polyethylene screw caps (leak-proof)
Sterilization	EO sterilized
Graduation	Printed graduation with white write-on area

Our Verdict

For most labs, classrooms and hobbyist workflows that need a reliable, sterile 50 mL tube, this 100 pack offers excellent value: robust polypropylene construction, accurate graduations and tight-sealing caps make routine centrifugation, storage and sample ID straightforward. They are a pragmatic, cost-effective option when certified clinical traceability or unusual chemical resistance is not required.

Frequently Asked Questions

Are these tubes ready to use out of the package?
Yes. The tubes are EO sterilized so they arrive sterile and ready for most lab and sample handling tasks.

Can these tubes be centrifuged at high speed?
Yes. They are made of polypropylene and rated for a maximum RCF of 12,000 x g for compatible centrifugation.

Do the caps prevent leaks?
The polyethylene screw caps are designed to seal securely and customers report they keep samples sealed during storage and transport.