Mixing and storage

Preparation for a spinal route is pharmacy work, not bench work: it must be preservative-free, because benzyl alcohol has no place in the space around the spinal cord, and it is prepared sterile for that route specifically. That single fact rules out the ordinary bacteriostatic water handling used for every other peptide in this library. A powder vial kept cool, dark and dry is the limit of what general handling covers, and everything past that belongs to a hospital pharmacy and an anaesthetist.