The ARC told us to put the chilly platelets in the incubator and let them rock for a couple of hours, then recheck for swirl. If they look good at that point and our pathologist is OK with that (which they usually are), we put them into inventory. We will use the unit(s), if we need to, until we restock. If the patient can wait for the next shipment, we hold off. Fortunately we only see this problem once or twice every winter.