Practi-75/25 & Regular Pack™ (for training)Practi 75 25 & Regular Pack for clinical training. Teach insulin injection techniques, mixing and combining of short and long acting insulin, and dosage calculations skills with one comprehensive teaching aid. Each vial has been designed and labeled to accurately simulate 75 25 and regular insulin vials found in clinical practice today. The Practi Insulin 75 25 contains an additive that mimics the action of its true drug counterpart as it must be