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.
Types of Short-Acting Bolus Insulin. There are currently two short-acting insulins approved by the FDA. Both are classified as regular insulin using the connotation (R). Humulin (R) Onset action: five 15 minutes. Peak action: two to four hours. Duration: five to eight hours. Novolin (R) Onset action: five 15 minutes.