This ergonomic, hand-held aspirator can be used with Pasteur pipettes, plastic aspiration pipettes or a variety of adapters for specific applications. A pressure-sensitive button on the 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 adapter for disposable pipette tips.