A multi-channel (eight-channel) variable micropipette, such as the Microlit RBO or Microlit SLP, is a laboratory instrument designed for the precise and efficient transfer of multiple liquid samples simultaneously. These pipettes typically feature eight dispensing tips, allowing for the transfer of equal volumes of liquid into multiple wells of a microplate or other containers at once. They are commonly used in applications like ELISA, molecular screening, and DNA amplification, where high throughput and accuracy are crucial.