GRAD-U-FEED Nurser, Ready-to-Fill. 60 ml Nurser. The GRAD-U-FEED Nurser is designed with your convenience in mind. It is ready to fill, compatible with a variety of nipples, and easily disposed of after a single use. Disposable designed for single use. The Grad-U-Feed Nurser holds 60 mL of feeding and is used to feed small amounts to infants in neonatal intensive care nurseries. The Grad-U-Feed Nurser is designed for measured feedings. The nursers are made of polypropylene. Nipple units are not provided with Grad-U-Feed Nursers.