Mixing and storage

For a 100 mg vial, add 1 mL of bacteriostatic water, which gives 100 mg in each mL, so 25 mg is 25 units on an insulin syringe. For a 1000 mg vial, add 10 mL for the same strength. Let the water run down the side of the vial and swirl gently, never shake. Keep powder cool and dark, and keep mixed vials in the fridge and use them within 28 days.