A detail from the McCarthy Group’s OWL LIMS. OWL interfaces with an FluidX XTR 96 rack scanner over TCP/IP; the scan is initiatiated by OWL, the samples tubes are scanned and results are returned. The database is then interrogated and the technician is presented with a display summarizing the changes that have been made to the rack. The technician has the choice of cancelling or committing the rack scan.
The display is designed to give intuitive visual feedback to the user about the physical state of the rack. The featured image at the top of the page is a logic defying test case to showcase all possible states. Actual use cases will typically be much more like the image below in which a single new tube has been added to an existing rack.
In the image below we have a more complex use case involving tube shuffles, allocations and no reads. This rack scan should not be committed, the rack should be cleaned and scanned again.