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.
Humulin R vs. Humalog. Humulin R is a brand name for regular insulin. It is a short-acting insulin. That means that it takes about 30 minutes to reach your bloodstream and works for about three to six hours. Humalog is a brand name for insulin lispro, which is a fast-acting insulin.