Heavy-duty 220 or 240-volt outlets: $300 or more for an outlet running off of a nearby outlet; $600 or more to upgrade the existing panel, which includes adding a 220 to 240 volt circuit, running the conduit, and installing a new receptacle.
Riboflavin is a B vitamin. It can be found in certain foods such as milk, meat, eggs, nuts, enriched flour, and green vegetables. Riboflavin is frequently used in combination with other B vitamins in vitamin B complex products.
Riboflavin, also called vitamin B2, is a water-soluble vitamin. The recommended dietary allowance (RDA) for riboflavin is 1.7 mg/day for an adult man and 1.3 mg/day for an adult woman. The best sources of this vitamin are meat, dairy products, and dark green vegetables, especially broccoli. Grains and legumes (beans and peas) also contribute riboflavin to the diet.