These wide mouth PYREX^® 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

• Top style: threaded
• Screw cap
• Cap material: polypropylene
• Cap colour: orange
• Thread finish: 45