Cell Culture Tube

What is the Cell Culture Tube?

A cell culture tube is a sterile tube with a gas-permeable or sealed cap for growing cells in small volume. It is used for culture maintenance, slants and small-scale expansion, with a vented or sealed screw cap.

Overview

The tube is usually moulded from polystyrene or polypropylene, with a round or flat bottom, a screw cap with a gas-permeable membrane or a sealed liner, and a size of 5–50 mL that fits racks, roller drums and shakers. Treated versions have a hydrophilic surface for adherent cells, while untreated tubes suit suspension culture. Sterility is achieved by gamma irradiation, and tubes are certified non-pyrogenic. The vented cap allows CO2 exchange in an incubator without letting contaminants in, and the sealed cap suits anaerobic work or transport. Culture tubes are used for maintaining small cultures, for microbiological slants and for screening many conditions in parallel, and they can be centrifuged at low g force for pelleting before subculture.

How does it work?

A laboratory tube holds a sample and fits the device that processes it, so its material, size and closure are functional rather than incidental. Polypropylene tubes resist most reagents, tolerate autoclaving and are translucent, and are the usual choice for centrifuge and microcentrifuge work. Conical tubes have a graduated taper that collects a pellet at the bottom and lets the supernatant be poured off. Culture tubes have a round or flat bottom, a screw cap with a gas-permeable or sealed liner, and a size that fits racks and shakers, and some are treated for cell attachment. Cryogenic tubes have external or internal threads, a silicone or O-ring seal and a material that stays intact at −80 °C or in liquid nitrogen. Transport tubes combine a leak-proof screw cap with a sterile interior and often a barcode label for identification. Closure design determines whether a tube seals, breathes or vents.

What are the key features?

• Polystyrene or polypropylene
• Vented or sealed screw cap
• Sizes 5–50 mL
• Treated surface for adherent cells
• Sterile and non-pyrogenic
• Fits racks, rollers and shakers

What are the technical specifications?

A typical cell culture tube configuration offers material of Polystyrene or polypropylene, volume of 5–50 mL, cap of Vented or sealed, surface of Treated or untreated, sterility of Gamma irradiated and pyrogen of Non-pyrogenic. Values are indicative of the product class; the exact figures for each configuration are confirmed on the quotation and the calibration documents supplied with the instrument.

Which applications is it used for?

The Cell Culture Tube is used in culture maintenance, microbiological slants, suspension culture and parallel condition screening. Across the wider Tubes class, laboratories also deploy it for molecular biology and PCR, cell culture and pelleting and bacterial and yeast culture.

Which standards and certifications apply?

Relevant standards and methods include ISO 13485 (medical device quality management), ISO 10993 (biological evaluation of medical devices), EN ISO 11607 (packaging for terminally sterilized devices), USP <661> (plastic components and systems), ISO 11737 (sterilization of health care products) and USP <88> (biological reactivity tests). Certification candidates for this model are CE and ISO 9001 manufacturing; each is to be confirmed for the specific configuration before shipment, and certificates are supplied only where they have been issued.

Respect the maximum g force and volume limits marked on the tube, since overfilling or over-spinning causes leaks and breakage; fill conical tubes to the marked level and never exceed the rotor rating. Balance tubes within the centrifuge tolerance to avoid vibration and rotor damage. Close caps fully, and use the correct cap for the temperature and pressure, because a snap cap can open in a fast spin and a sealed cap can build pressure when heated. Keep sterile tubes in unopened packaging until use, and work in a clean area. Do not reuse single-use tubes for regulated or sterile work. Store tubes below their maximum temperature, and avoid prolonged exposure to sunlight, which embrittles some plastics. Label tubes so identity survives freezing and handling.

How do I select the right Cell Culture Tube?

Choose treated tubes for adherent cells and untreated for suspension, with a vented cap for incubator use. Confirm sterility and pyrogen status. RFQ: volume, surface treatment, cap type, sterility and rack format. Provide volume, surface treatment and cap type.

How does it compare with other Tubes variants?

Choose the tube by the process it must survive. For small volumes, molecular work and centrifugation to 20,000 × g, use microcentrifuge tubes with a snap or screw cap that is certified nuclease-free. For cell pelleting and media work, use conical centrifuge tubes rated for the rotor g force, with sterile, gamma-treated options for culture. For bacterial or yeast culture, use culture tubes with the right closure: a vented cap for aerobic growth and a sealed cap for anaerobic or shaking work. For long-term storage, use cryogenic tubes rated for the temperature, with internal threads to reduce contamination risk or external threads for easier handling. For transport, use tubes with a leak-proof screw cap and a barcode, and confirm sterility and any transport regulation needs. Check material compatibility, fill volume and whether the tube must be free of pyrogens, DNase or RNase.