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DescrizioneErgonomic design enhances comfort, utility and dispensing precision while helping to reduce the risk of injury from repetitive and awkward pipetting motions. This lightweight, affordable device provides accurate, trouble-free pipetting with simple, one-handed operation. The optimally located thumb wheel rotates easily for precision aspirating or dispensing, down to a volume of one drop at a time. The thumb wheel also can be used to “blow out” the contents of the pipette. Available in three different pipette volumes, 2, 10 and 25 ml, each color-coded for easy identification. Resistant to acids, alkalis and most solvents, they can be disassembled for cleaning. Pumps sold individually (Tubes not included).