Methods for rapidly identifying useful chemicals in liquid sample

The present invention generally relates to automated and integrated systems and methods for rapidly identifying chemicals with biological activity in liquid samples, particularly automated screening of low volume samples for new medicines, agrochemicals, or cosmetics. A high throughput chemical screening method uses methods of concurrent transport and/or processing to increase throughput. A screener may concurrently retrieve chemicals from an addressable chemical storage module and deliver chemicals to a liquid handling module. The screener may also use one transport lane for moving chemicals away from a storage module, and a second transport lane for moving chemicals toward the storage module.