Freeze-drying: the process that turns a liquid peptide into the dry powder you receive in a research vial, making it stable for storage and shipping.Water is removed by freezing the solution and then reducing pressure, allowing ice to sublimate directly to vapor, leaving a dry powder (lyophilizate). Lyophilized peptides are stable at room temperature for shipping and at refrigerator temperature for months to years, depending on the compound. Solutions are not. Reconstitution with bacteriostatic water restores the peptide to injectable form. See also: bacteriostatic water; reconstitution.M↑ Top