Figure 1

Evaluation of different pipettes for liquid transfer. (a) Serological pipette (10 ml) used to transfer dyed water into a 15 ml conical tube. (b) Positive-displacement pipette (1 ml) used to transfer dyed water into a 15 ml conical tube. (c) Standard air-displacement laboratory pipette (1 ml) used to transfer dyed water into a 12 ml LeucoSep tube. (d) Positive-displacement repeater pipette (5 ml) used to transfer dyed water into a 12 ml LeucoSep tube. (e) Plastic bulb transfer pipette used to transfer dyed water into a 12 ml LeucoSep tube.