Thomson Enhanced AirOtop Seals for Ultra Yield Flasks

  • Enhanced AirOtop Seals (patented) are simple, disposable, sterile, high air exchange seals for all shake flasks
  • Applied as a clean sterile barrier that allows samples to vent while preventing contamination from condensation and airborne particles such as phage, mold, spores, and dust
  • When used in combination with the ultra yield flasks they become a simple "disposable bioreactor" at a fraction of the price
  • Replace plastic and metal flask caps, aluminum foil over flasks, cotton plugs, cheese cloth, etc.
  • 0.2┬Ám sterile barrier
  • Long term re-sealable membrane for use with ultra yield and other brand flasks
  • Testing has been conducted on multiple customer samples with great results on up to 7 days of cellular growth. This testing included Protista (Algae), E.coli and other microbes which has all resulted in improved growth and more aerobic growth
  • Multiple sizes are available to keep all of your flasks covered
  • All seals come in packs of 100

Product Numbers


Product number

For Ultra Yield 2.5L flask


For Ultra Yield 500mL flask


For Ultra Yield 250mL flask


For Ultra Yield 125mL flask