Explain the difference between “food grade” and 3H lubricants.

Food grade lubricants (H1 NSF) are certified for incidental contact with food during processing. They are made specifically with ingredients that pose no danger to humans and animals even if they were to get into the food product. 3H lubricants are certified for direct use on surfaces that come into contact with food.  A good example is the coating spray allowed on bread pans to prevent dough from sticking.