How can I prevent spotting and filming on dishes?

Condition the final rinse water with a liquid rinse aid and keep the rinse aid dispenser filled. Ensure water temperature is at least 120°F (49°C), use the correct amount of fresh detergent, and make sure home water pressure is between 20 to 120 psi (138 to 828 kPa). For occasional removal of existing spots and film, try a white vinegar rinse procedure as described in the Troubleshooting section. (Page 19)