This ergonomic, hand held aspirator can be used with Pasteur pipettes, plastic aspiration pipettes, or a variety of adaptors for specific applications. A pressure sensitive button on top of the unit controls the specific amount of vacuum applied. This prevents the accidental aspiration of cells or supernatant associated with normal vacuum techniques. Use with standard in-house vacuum source or with the M-Vac or E-Vac aspiration systems. Autoclavable unit is supplied with a single channel adaptor for disposable pipette tips.