In states where pricing by kWh is not permitted, time-based charging fees for Level 2 charging stations owned by Blink and operated on the Blink Network range from $0.04 to $0.06 per minute, depending on membership status. Time-based charging fees are rounded up to the nearest 30-second interval.
It depends on which insulin to use. There are 3 kinds. Regular insulin has an onset of action (begins to reduce blood sugar) within 30 minutes of injection, reaches a peak effect at 1-3 hours, and has effects that last 6-8 hours. NPH insulin is an insulin with an intermediate duration of action. It has an onset of action starting about 2 hours following injection.
Once opened, Levemir pens and vials last a little longer than average (up to 42 days) and cloudy insulins pens, such as Novolog 70/30 and Humalog 75/25, last for a shorter time (up to 14 days). The package insert that comes with your insulin specifies how long it remains good once it is opened, or you can ask your local pharmacist.