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.
Intermediate-acting insulin. What itâs called: Humulin N (NPH), Novolin N (NPH) Intermediate-acting insulin can control blood sugar levels for about 12 hours or longer, so it can be used overnight. It begins to work within one to four hours, and peaks between four and 12 hours, depending on the brand.