Thomson Sampling Flasks

Optimum Growth® Sample Flasks with one-way sampling valves that help reduce viable cell count sampling times.
Eliminate the need to remove flask caps & allow aseptic sampling on the benchtop.

Optimum Growth® Flasks provide several options for aseptic sampling in all flask sizes. The 125mL, 250mL, and 500mL Optimum Growth® Flasks have an optional 1-way valve in the vented sample cap. The 5L Optimum Growth® Flask has an optional 1-way valve in the side of the flask.

The aseptic sampling option is available for the 125mL, 250mL, 500mL & 5L Optimum Growth® Flasks.



Thomson’s improved sampling method allows you to sample directly in the shaker without the need to remove caps or use a deteriorating needle septum.

  1. Open shaker
  2. Attach syringe to sampling port and withdraw the sample
  3. Remove syringe & close shaker

More on Thomson Instruments

Thomson Instrument Company has been serving the pharmaceutical and life science industries since 1970. Their lasting commitment to provide customer satisfaction and quality products has enabled them to maintain a solid reputation throughout the industry. Thomson’s range of innovate consumables and equipment help make your lab more efficient. Their filter vials speed up prep and analysis, while their patented Optimum Growth and Ultra High Yield Flasks with AirOTop seals provide the perfect environment to enhance cell growth. Their range of well plates represent a cross section of plates for many different needs.

Emma’s take on this product

Emma Craughan
Head of Sales

Convenient: Thomson flasks are available for both Mammalian cell culture and microbial applications. There is a wide range of accessories making them extremely convenient and safe to use in the lab. Transfer caps allow for sterile fluid transfer and special seals allow for optimal gas transfer.

Performance: Thomson flasks have been developed to be scaleable, with a wide range of sizes available. Benefits include high aeration, low foaming and high fill volumes thus saving space in your incubator. Whatever the cell line you’re cultivating, Thomson flasks give excellent growth.

Did you know?

Thomson make two distinct ranges of flasks – Ultra Yield are for microbial cultures and Optimum Growth Flasks are for mammalian cell cultures.

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    Thomson’s range of innovate consumables and equipment help make your lab more efficient.