Levram Lifesciences manufactures Pasteur Pipettes that are have volumetric scale markings, smooth finishing, easily retain shape, and effectively carry and transfer liquid. Levram’s multi – purpose graduated pasteur pipette also referred to as transfer pipettes, have their stems and bulbs in the form of a single piece made of soft plastic such as polyethylene. The bulb portion is thinner and therefore “squeezable”. While the pipette portion is thick enough to be rigid.