0 = Battery Acid 1 = Stomach Acid 2 = Lemon Juice, Vinegar, Sodas 3 = Grapefruit and Orange Juices 4 = Tomato Juice, Beer 5 = Black Coffee, Pepto Bismol 6 = Milk, Saliva, Urine 7 = Pure Water, Blood 8 = Baking Soda, Seawater, Eggs 9 = Toothpaste, Hand Soap 10 = Milk of Magnesia, Dish Detergent 11 = Household Ammonia and Cleaners 12 = Hair Straighteners 13 = Bleach, Oven Cleaners 14 = Liquid Drain Cleaner, Caustic Soda A mouth with pristine conditions will generally measure a pH level around 7 or maybe a little bit above, with little to no acidity present which is a good thing because once your mouth has too much acid in it, your teeth are in danger
Overheating protection
It should also keep the original aroma and taste as much as possible, along with reducing the harshness of the smoke and keep tobacco flakes out of the smokers mouth
An eligible adult may apply for a passport book by mail using Form DS-82 and submitting the card