Excel Electronic Pipettors are available in single channel, 8-channel and 12-channel versions. In addition to standard pipetting mode (for pipetting single volumes), the pipettors can be set for repeat pipetting, sequential pipetting, automatic mixing and for serial dilutions. These program modes allow users to significantly increase efficiency when pipetting into multiple tubes, microtiter plates or PCR plates. Each pipettor is supplied with a rechargeable Lithium Ion battery and charger. A full battery charge allows up to a full day’s usage after charging.