By varying the proportions of copper and zinc, the properties of the brass can be changed, allowing hard and soft brasses. The density of brass is approximately .303 lb/cubic inch, 8.4 to 8.73 grams per cubic centimetre.
* Peptic ulcers. * Smoking cigarettes. * Drinking carbonated beverages. * Consuming fatty or spicy food, citrus fruits, tomato products, onions and chocolate. * Gastritis. * Taking medications including ibuprofen, aspirin, and certain drugs used to treat hypertension.
1 When you are purchasing a tea for acid reflux relief, make sure to find an herbal blend or green tea that is caffeine-free. Some teas are chemically decaffeinated, but there are plenty of teas that are naturally caffeine free and are beneficial for heartburn relief.  Avoid mint infused teas.