Collection: Pipettes & Liquid Handling Instruments

ISO 8655 defines how piston-operated instruments are tested — accuracy and precision limits per volume — but it sets no mandatory interval. Most labs calibrate every 3–6 months, with diagnostics and GLP environments often quarterly, and base the interval on usage intensity, drift history, and quality-system requirements.

When the same dilution or dispense repeats many times a day, or when liquids are viscous or volatile enough to defeat air-displacement pipettes. Positive-displacement systems such as Hamilton's Microlab 600 hold better than 99% accuracy independent of liquid type, and they remove the repetitive-strain load of serial manual pipetting.

Handheld pipettes are typically air displacement — an air cushion moves with the piston, which works well for aqueous liquids but drifts with viscous or volatile ones. Syringe-driven instruments such as the Hamilton Microlab 600 work by positive displacement, with the plunger in direct contact with the liquid, so accuracy stays independent of viscosity and vapor pressure. For the analytical syringes themselves, see our Syringes & Needles category.

An aspirator uses vacuum to pull supernatants, spent media, or wash buffers out of tubes, plates, and flasks quickly and without cross-contamination — a staple of cell culture and ELISA benches. Compare collection-vessel volume, autoclavable parts, and single- versus multi-channel adapters when choosing one.

Danyel Biotech serves as Hamilton's official Israeli distributor for benchtop and handheld liquid handling — Microlab instruments, syringes, and accessories — backed by local stock and technical specialists. Request a quote directly from this page.