Special Flasks

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Thomson Optimum Growth® Special Flasks were designed with the unique needs of small- to medium-scale bioprocessing applications

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Components For Closed Systems

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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

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Multiport Flasks

Optimum Growth® Multiport Flasks serve as closed systems with feed/transfer ports

  • Feature feed/transfer ports for seeding larger bioreactors or for batch feeding medium sized cultures

  • Both aseptic sampling valves & feed/transfer ports making the 1.6L and 5L flasks closed systems

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Optimum Growth® Flasks

Sampling Flasks

Several Options for aseptic Sampling

Optimum Growth® Flasks provide several options for aseptic sampling in all flask sizes. The 125mL, 250mL, and 500mLOptimum 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.

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Vented Sampling Caps

The Vent Cap of the Optimum Growth® Sampling Flask incorporates a 1-way valve that only allows media to flow out of the flask. This eliminates contamination and allows for aseptic sampling of cells while the flasks remain in the shaker or on the benchtop, eliminating the need for transfer to the hood from the shaker.

Optimum Growth® Sampling Flasks come with a 0.2μm PTFE vented cap for optimum aeration during cultivation. The Thomson vented caps create a safe aseptic barrier from harmful contaminants, while the large surface area creates an optimum air exchange for cell growth.

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Sampling in the Shaker

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
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Multiport Optimum Growth®

Transfer & Feed Flasks
Born As A Custom Product...

The Multiport Optimum Growth® Flask was born out of the need for biopharmaceutical companies to ensure the elimination of contamination risk. The multiport flasks allows for completely closed system aseptic processing.

Steps Include:
  1. Addition of media to the flask
  2. Inoculation
  3. Feeding
  4. Sampling
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Sized From 125mL to 5L

125mL Flask

125mL

250mL Flask

250mL

500mL Flask

500mL

1.6L Flask

1.6L

5L Flask

5L

Why use Multiport Optimum Growth®?

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Sample Port Side
  • Allows viable cell count sampling while the flask remains in shaker or on benchtop

  • No need to decontaminate and open the flask cap

  • Ensures contamination-free processing

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Feed Side
  • Tube fusing for media addition, inoculation, feeding

  • Transfer to larger vessel maintaining sterility

  • Eliminates the need to inoculate using expensive and awkward cell bags

  • Contamination-free processing by never needing to open the flask cap

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Optimum Growth® Flasks

Flask Clamp Compatibility

Use the chart below to find the appropriate flask clamp compatible with your shaker.

Flask SizeEppendorf®INFORS HT®Kuhner®Fisher Scientific®VWR®
125mLM1190-900112202SM31012511-676-01357019-676
250mLM1190-900212203SM31025011-676-01457019-678
500mLM1190-900312204SM31050011-676-01557019-682
1.6Ln/a12205SM311600n/an/a
2.8LACE-2000S12251SM312800T11-676-01857019-686
5LACE-5000S12209SM313000F23602857019-696
Thomson Solutions At Work
Looking For Something Custom?

We’re here to help!

Thomson's R&D Department is eager to help you in finding a custom solution to your needs. Some of these even evolve into our regular line of products.

Optimum Growth® Sample Flask Part Numbers

  • Optimum Growth® 125mL Flask, w/Sampling Port
    sterile
    PTFE 0.2µm Vent Cap for Increased Aeration | Sterile
    Aseptic & Fast Sampling in the Shaker
    pn931110-SP|50/case
    click for more details
  • Optimum Growth® 250mL Flask, w/Sampling Port
    sterile
    PTFE 0.2µm Vent Cap for Increased Aeration | Sterile
    Aseptic & Fast Sampling in the Shaker
    pn931111-SP|50/case
    click for more details
  • Optimum Growth® 500mL Flask, w/Sampling Port
    sterile
    PTFE 0.2µm Vent Cap for Increased Aeration | Sterile
    Aseptic & Fast Sampling in the Shaker
    pn931112-SP|25/case
    click for more details
  • Optimum Growth® 5L Flask w/Sampling Port
    sterile
    PTFE 0.2µm Vent Cap for Increased Aeration | Sterile
    Aseptic & Fast Sampling in the Shaker
    pn931116-PORT-E|4/case
    click for more details

Optimum Growth® Multiport Flask Part Numbers

  • Multiported Optimum Growth® 125mL Flask
    sterile
    PTFE 0.2µm Vent Cap for Increased Aeration | Sterile
    Multiported Transfer/Feed & Sampling Ability
    pn931110-DP|30/case
    click for more details
  • Multiported Optimum Growth® 250mL Flask
    sterile
    PTFE 0.2µm Vent Cap for Increased Aeration | Sterile
    Multiported Transfer/Feed & Sampling Ability
    pn931111-DP|40/case
    click for more details
  • Multiported Optimum Growth® 500mL Flask
    sterile
    PTFE 0.2µm Vent Cap for Increased Aeration | Sterile
    Multiported Transfer/Feed & Sampling Ability
    pn931112-DP|15/case
    click for more details
  • Multiported Optimum Growth® 1.6L Flask
    sterile
    PTFE 0.2µm Vent Cap for Increased Aeration | Sterile
    Bidirectional Transfer/Feed & Sampling Ability
    pn931113-PORT-TRT|12/case
    click for more details
  • Multiported Optimum Growth® 5L Flask
    sterile
    PTFE 0.2µm Vent Cap for Increased Aeration | Sterile
    Bidirectional Transfer/Feed & Sampling Ability
    pn931116-PORT-TRT-F|4/case
    click for more details

Optimum Growth® Flask Carrier Part Numbers

  • 125mL 8 Position Carrier
    non-sterile
    Use with Optimum Growth® 125mL Flask (931110)
    Easily transport 8 125mL flasks at a time
    pn1212900|1/case
    click for more details
  • 250mL 8 Position Carrier
    non-sterile
    Use with Optimum Growth® 250mL Flask (931111)
    Easily transport 8 250mL flasks at a time
    pn1212905|1/case
    click for more details

Optimum Growth® Vent Cap Part Numbers

  • Optimum Growth® 125mL Vent Cap
    sterile
    PTFE 0.2µm for Increased Aeration | Sterile
    For Optimum Growth® 125mL Flasks
    pn899110|50/case
    click for more details
  • Optimum Growth® 250mL Vent Cap
    sterile
    PTFE 0.2µm for Increased Aeration | Sterile
    For Optimum Growth® 250mL Flasks
    pn899111|50/case
    click for more details
  • Optimum Growth® 500mL Vent Cap
    sterile
    PTFE 0.2µm for Increased Aeration | Sterile
    For Optimum Growth® 500mL Flasks
    pn899112|25/case
    click for more details
  • Optimum Growth® 1.6, 2.8 & 5L Vent Cap
    sterile
    PTFE 0.2µm for Increased Aeration | Sterile
    For Optimum Growth® 1.6, 2.8 & 5L Flasks
    pn899116|24/case
    click for more details

Optimum Growth® Solid Cap Part Numbers

  • Optimum Growth® 1.6, 2.8 & 5L Solid Cap
    sterile
    Evaporation Proof Storage Cap | Sterile
    For Optimum Growth® 1.6, 2.8 & 5L Flasks
    pn899600-B|24/case
    click for more details

Optimum Growth® Exhaust Cap Part Numbers

  • Bioreactor Exhaust Cap
    sterile
    2' C-Flex® (I.D. 1/4" x O.D. 3/8") Tubing | Sterile
    Use with Optimum Growth® 1.6L Flask & bioreactor
    pn931713-8|8/case
    click for more details

Transfer Cap Ring & Stand Part Numbers

  • Stand with Ring for Inverting Optimum Growth® 1.6 & 2.8L Flasks
    non-sterile
    Use with 1.6 & 2.8L Inversion Transfer Caps
    Stand Height 22"
    pn931609|1/case
    click for more details
  • Stand with Ring for Inverting Optimum Growth® 5L Flask
    non-sterile
    Use with 5L Inversion Transfer Caps
    Stand Height 22"
    pn931606|1/case
    click for more details

Transfer Cap Ring Only Part Numbers

  • Ring Only for Inverting Optimum Growth® 1.6 & 2.8L Flasks
    non-sterile
    Use with 1.6 & 2.8L Inversion Transfer Caps
    Requires 22" Stand
    pn931700|1/case
    click for more details
  • Ring Only for Inverting Optimum Growth® 5L Flask
    non-sterile
    Use with 5L Inversion Transfer Caps
    Requires 22" Stand
    pn931607|1/case
    click for more details

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