These multi-channel electronic pipettors feature a soft-touch pipetting key, contoured handle, adjustable finger rest, and improved tip cone to reduce the operational forces needed for use. The prestigious TUV testing service, an OHSA-accredited independent testing lab, has given these electronic pipettors the “ergonomic approved” Certification. Large LCD screen clearly displays all settings. Each function has a dedicated control to reduce inadvertent volume changes or tip ejection. Operating modes include standard pipetting, sample mixing, reverse pipetting, electrophoresis gel, and dispensing. Rechargeable battery provides over 4000 pipetting cycles on a singe charge. Units can be disassembled for cleaning and pipette shaft may be removed and autoclaved for decontamination or use in ster what's included: rechargeable battery and 110 VAC charger/power supply with us plug the first electronic pipettors to be awarded the “ergonomics approved” Certification! microprocessor control for precise volume delivery choose from five convenient operating modes to improve productivity “gel” mode discharges slowly for electrophoresis gels easily disassembled for thorough cleaning.