1 If removing and disposing of the existing roofing material isn't included in an estimate, this can add another $3-$5 a square foot or $510-$1,100 for a basic ranch-style home -- and costs go higher depending on location and the difficulty of the removal project. According to RoofHelp.com, the average lifespan for 20-year asphalt shingles is about 14 years in Phoenix, Arizona; 19.5 years in Minneapolis, Minnesota; and 20.8 years in Reading, Pennsylvania.
Excipients or inactive ingredients are supposed to be inert, which means they don't have any effect on you, but some can cause symptoms by themselvesâ and potentially allergic reactionsâor interact with the drug's active ingredients to cause unexpected results.
formulations in which the chemical is the sole active ingredient. In other words, a commercial chemical product is an unused material that consists of the pure chemical, a highly technical grade of the chemical or is a mixture that contains the chemical as a sole active ingredient. The term sole active ingredient can be defined as an ingredient that is the only chemically active component for the function of a product. The function of the customer's lab standard is to calibrate laboratory instruments specifically to the chemical aldrin. Therefore the aldrin is the sole active ingredient and meets the definition of a commercial chemical product.