The MICROLAB STAR Tip Feeder option is an in-deck device which stores tip racks for longer walk-away times. Up to six feeders can be installed in a STAR. (The total number of installable tip feeders will vary for the STARlet and STARplus.) Each tip feeder can hold 42 standard volume (300µl) tip racks, 42 low volume (10µl) tip racks, or 14 high volume (1000µl) tip racks. The tip feeders can either be feed manually or a blister of tip racks can be inserted on a carrier and the workstation can transfer the tip racks from the blister pack to the tip feeder for storage prior to running the assay.