Blanket: Batt and Roll Insulation Blanket insulation -- the most common and widely available type of insulation -- comes in the form of batts or rolls. It consists of flexible fibers, most commonly fiberglass.
1 In the United States, rapid-acting insulin, Lyspro (humalog) is mixed with NPH in a 50:50 (50% NPH and 50% insulin Lyspro) and 75:25 (75% NPH and 25% insulin Lyspro) ratio.  Insulin/Aspart (Novolog) combinations also are available as 70:30 mixtures (70% NPH, 30% insulin aspart).
1 Not all insulin types are available for use in insulin pen cartridges. 2  Insulin pens do not let you mix insulin types, which means that if the insulin mixture you need is not available as a pre-mix, two injections must be given - one for each type of insulin.  Insulin pens should only be used for self-injection.