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Foam Stopper

Reusable, non-absorbent, white foam stoppers provide a snug fit, yet allow free airflow. Ideal for Erlenmeyer flasks when propogating yeast cultures. 

  • Autoclavable up to 249°F (121°C)
  • Fits 35-45mm inner diameter openings in graduated cylinders, tubes, and flasks
  • Easily manipulated - springs back to original shape after use
  • Resists alcohols, bases, esters, and dilute acids
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