Why We Vomit. In many cases, throwing up is a protective reflex to rid your body of viruses, bacteria, or parasites in your digestive system. âIf you were to eat something that was spoiled or poisoned, your body would get a signal that something was wrong,â says Bruno Chumpitazi, MD, of Texas Childrenâs Hospital.
Parafilm is ideal for the scientific laboratory because it is a thermoplastic, self-sealing film. It holds moisture loss to a minimum. It offers excellent protection for the contents of tubes, flasks, and petri dishes.
And, yes, the US Food and Drug Administration has approved food-grade paraffin, even though it is a derivative of the production of crude oil. Mostly it is used to coat fruits and cheeses. While food-grade paraffin is technically edible, it is not digestible; it passes through the body without being absorbed.