Biomerieux Transfer Pipet Large Bulb Sterile Individual Wrap Biomerieux Produced from a custom grade of low-density polyethylene (LDPE), these unbreakable one-piece pipets are used to draw and dispense liquids in controlled, reproducible drop sizes. Plastic transfer pipets are the perfect substitute for breakable glass Pasteur pipets, which can be a danger to laboratory personnel. And, because they are completely disposable, there is never any cross-contamination which is associated with reusable rubber bulbs. An extensive selection of capacities, lengths, and tip styles are offered to accommodate different industry needs.