Corning Part No. 357508
Disposable, Clear Polystyrene, sterile For economical one-time use Liquid level is meniscus-free More transparent and rigid than polypropylene pipets Calibrated to tip, with volume adjusted for blowing out last drop Tolerance % Sterilized by gamma radiation Non-pyrogenic Includes non-absorbent fiber plug Thermoformed package of individually wrapped pipets peels apart or snaps open easily 25 mL Extended Pipet, Polystyrene (7553T15 & T20) In 0.25 mL divisions, calibrated to tip for blow-out Constriction at top creates chamber for cotton plug 25 mL Extended Pipets feature negative graduations to -5 mL in 0.25 mL above zero mark; these graduations ignored for serological work, but can be used to compensate for drainage retention when pipetting viscous liquids.