Hertz. Hertz (abbreviated: Hz) is the standard unit of measurement used for measuring frequency. Since frequency is measured in cycles per second, one hertz equals one cycle per second. Hertz is used commonly used to measure wave frequencies, such as sound waves, light waves, and radio waves.
Novolin R should only be mixed as directed by the physician. 1  Novolin R is a short-acting insulin and is often used in combination with intermediate- or long-acting insulins. 2  The order of mixing and brand or model of syringe should be specified by the physician. A U-100 insulin syringe should always be used.
Since the first rapid-acting insulin, insulin lispro (brand name Humalog), came on the market in 1996, most diabetes experts have recommended taking it within 15 minutes of starting a meal (any time between 15 minutes before starting to eat to 15 minutes after starting to eat).