A myth exists that the 7 Up name comes from the drink having a pH over 7. That would make it neutral or basic on the scale; however, this is not the case, as the 7 Up pH is close to 3.79, making it acidic on the pH scale and similar to other drinks of this type. The real origin of the name is unclear, though Britvic claims that the name comes from the seven main ingredients in the drink, while others have claimed that the number was a coded reference to the lithium contained in the original recipe, which has an atomic mass around 7. Britvic also claims that the name is a result of the fact that 7 Up was bottled in 7-ounce bottles (Coca-Cola and most other soft drinks were bottled in 6-ounce bottles).