These wide mouth PYREX® 4L Erlenmeyer flasks have a large, 29mm neck opening which makes it easy to use larger volume serological pipets. Ideal product for use as a shaker flask or for media prep and storage needs. They also have a single size linerless, one-piece autoclavable orange polypropylene plug seal caps with GL45 threads and drip-free pouring rings. -A wide range of optional caps are available for these bottles including: -Polypropylene colored caps for ease of sorting and identification. -Vented membrane cap with 0.22 µm PTFE hydrophobic membrane. -PBT (polybutylene terephthalate) solid caps and ETFE pouring rings for dry heat sterilization (180°C). -PBT caps with silicone septa for syringe sampling or introduction of reagents.
Features a convenient single size plug-seal cap. Wide, 29 mm neck opening makes it easy to use larger volume serological pipets. Ideal product for all media prep and storage needs. Can be used as vented culture flask when optional membrane cap is used.
For replacement caps, O-Rings or Vented Membrane Cap, see Cat. No. 1395