The price of aminophylline has varied greatly over the years, influenced by various factors such as production costs, market demand, and regulatory policies. When aminophylline was first introduced, it was relatively inexpensive. However, as the pharmaceutical industry evolved and the costs of research, development, and production increased, so too did the price of many medications, including aminophylline.
In addition to disinfectants, various chemicals are used to treat suspended solids and turbidity in water. Coagulants, such as aluminum sulfate (alum) and ferric chloride, are added to facilitate the coagulation process, where small particles clump together to form larger aggregates known as flocs. These flocs can then be easily removed, resulting in clearer water. Flocculation agents can further assist in this process, enhancing the removal of impurities.