The best 5 mL conical tube depends on whether you need a sterile transport tube, a tube for centrifugation, or a large supply for routine work. Globe Scientific’s attached-cap tube suits sterile transport and upright storage; LABALPHA is a strong fit when stated centrifuge limits and clear graduations matter; and LABINVO offers a high stated RCF and sterile, nuclease-free specifications. Compare cap style, sterility, graduations, and pack size before choosing.
| Product | Best suited for | Notable details |
|---|---|---|
| Kashi Scientific 5 mL Screw Cap Tubes | Basic sterile, labeled sample handling | Blue lids, graduations, write-on spot |
| Globe Scientific 6101S | Sterile upright transport | Attached cap, self-standing base |
| LABALPHA 5 mL Tubes | Stated centrifuge and temperature requirements | Max. RCF 12,000×g; readable graduations |
| Globe Scientific 6101-A | High-volume purchasing | Separate screw caps; case of 1,000 |
| LABINVO 5 mL Tubes | High-RCF, sterile applications | Max. RCF 25,000×g; RNase- and DNase-free |
Kashi Scientific 5 mL Screw Cap Tubes
These sterile, lab-grade polypropylene tubes have 5 mL capacity, blue screw caps, printed graduations, and a write-on spot. The listed pack contains 100 tubes. The design makes them a practical choice for buyers who need to identify samples directly on the tube and want sterile tubes in a moderate pack size.
Best for: Routine sample handling where a printed scale and marking area are useful. They are also worth considering when blue lids help distinguish these tubes within a workflow. Limitation: The listing does not state a maximum relative centrifugal force or temperature range, so confirm suitability for those requirements before use.
Globe Scientific 6101S Self-Standing Tubes
Globe Scientific’s 6101S tubes are sterile, transparent polypropylene transport tubes with molded graduations, a conical bottom, and a flat self-standing base. Each tube has an attached white polyethylene screw cap. The stated features include a secure, leak-resistant cap design and the ability to withstand freezing temperatures. The package contains 500 tubes.
Best for: Buyers who want sterile transport tubes that can stand upright on a benchtop and have an attached cap. The attached design can be helpful when handling caps and tubes together. Limitation: The provided specifications do not give a maximum RCF or a precise freezing-temperature range, so check the product details if those limits are essential.
LABALPHA 5 mL Conical Centrifuge Tubes
LABALPHA lists these polypropylene tubes for a maximum RCF of 12,000×g, temperatures up to 121°C, and freezing to -80°C. Graduations start at 1 mL and continue in 1 mL increments, with stated accuracy of ±2%. A white writing area is intended for legible sample marking, and the listing says both graduations and writing areas are chloroform-resistant. The pack contains 100 tubes.
Best for: Buyers who need clearly specified centrifuge and temperature limits, plus readable volume markings. Limitation: Cap color is random, according to the listing. Choose another option if a particular cap color is necessary for your identification system.
Globe Scientific 6101-A Bulk Tube Case
This 5 mL Globe Scientific option has a conical bottom, molded graduations, and a self-standing design. It comes with separate white polyethylene screw caps in a case of 1,000. The separate-cap configuration distinguishes it from the 6101S, which has attached caps, and may suit facilities that prefer to cap tubes after filling.
Best for: Labs purchasing in bulk that want self-standing tubes and separate caps. Limitation: The listed details do not specify sterility, a maximum RCF, or temperature limits. Do not assume those characteristics; verify them if they are required for your application.
LABINVO 5 mL Safe-Lock Tubes
These polypropylene microcentrifuge tubes have a conical bottom, molded graduations, and Safe-Lock caps. The listing states a maximum centrifugal force of 25,000×g and a temperature range of -86°C to 121°C. It also describes the 200-tube pack as electron-beam sterile, RNase-free, DNase-free, and non-pyrogenic.
Best for: Buyers looking for stated high-RCF performance and sterile, nuclease-free specifications in a 5 mL tube. Limitation: The listing describes these as microcentrifuge tubes, so confirm that their format suits your intended holder and workflow rather than assuming they match every standard conical transport tube.
Buying Guide: How To Choose A 5 mL Conical Tube
Do you need a transport tube or a centrifuge tube?
Start with the task. Transport-focused options, such as the Globe 6101S, emphasize a screw cap and self-standing base. Centrifuge-focused listings provide maximum RCF information, as LABALPHA and LABINVO do. Match the tube’s stated specifications to your equipment and procedure; capacity alone does not establish centrifuge suitability.
Should you choose attached or separate caps?
An attached cap stays connected to its tube during handling. A separate-cap tube may fit workflows where caps are applied after filling. Choose based on how samples are filled, capped, and organized. Confirm the cap type in the listing, particularly when comparing the two Globe Scientific models.
Which markings and sample-identification features matter?
Graduations help estimate or read sample volume, while a write-on area provides space for identification. Compare the scale details when precision matters: LABALPHA lists 1 mL increments and ±2% accuracy. Other product listings mention graduations without providing the same accuracy specification.
How should you compare sterility and pack size?
Check whether sterility is explicitly stated, and consider any required nuclease-free or non-pyrogenic specifications. Pack sizes here range from 100 to 1,000 tubes. Select a quantity that suits purchasing needs while checking storage requirements and the product’s listed specifications.
Frequently Asked Questions
What is a 5 mL conical tube used for?
A 5 mL conical tube is a small-capacity vessel used for sample handling, transport, or centrifugation when the selected tube’s stated features match the application.
Are all 5 mL conical tubes suitable for centrifugation?
No. Check the specific tube’s maximum RCF and follow the relevant equipment and laboratory instructions. Several listings do not provide an RCF limit.
What is the difference between attached and separate caps?
An attached cap remains connected to the tube, while a separate cap is supplied independently. The choice depends on handling preference and workflow.
Which option lists the highest maximum RCF?
LABINVO lists a maximum of 25,000×g. LABALPHA lists 12,000×g. Verify that the selected tube is appropriate for the intended use.
Do these products all specify sterility?
No. Sterility is explicitly stated for the Kashi, Globe 6101S, and LABINVO listings. The provided details for Globe 6101-A do not specify sterility.