Automating slide staining is a must for labs that wish to increase their yield. The PolyStainer performs standardized staining procedures that free lab staff from labor-intensive staining procedures. General microbiology and histology labs that seek to reduce sample staining workloads will greatly benefit from its use. Up to 20 microscope slides are loaded in the PolyStainer basket. Next the robotic arm will dip and stir these through four exchangeable plastic wells. Slides can be dipped in a fifth drainable water well that ensures water will be renewed after rinsing each slide basket. Last, slides can be fan dried with or without heat. The four reagent wells in the system allow to perform an extremely broad array of stains.