Infusion Rate Calculator 2 is useful when delivering anesthetic drugs and inotropes in operating rooms and intensive care units. Infusion Rate Calculator 2 is an universal app, it works on iPhones, iPads and iPod touches, but this version requires iOS 7 or later. (There is an iOS 6 version available) The Picker is easy to use; it stores the last result. When devices for Target Controlled Infusion are not available, IRC 2 helps to calculate dosages in milliliters per hour.