You're probably storing your peptides wrong. Lyophilized (powder): Room temp OK short term, fridge preferred. Reconstituted: 2 8C mandatory. No exceptions. Never freeze reconstituted peptides. Use within 28 30 days after reconstitution. Protect from Reconstitution Solution for Laboratory Use How to Store Bacteriostatic Water Safely Confused about whether BAC water needs refrigeration after opening? According to USP standards and Pfizer's own guidance, both room temp (2025C) and refrigeration are acceptable TM BioWater Bacteriostatic Water (BAC) 30mL Glass Vial Bacteriostaticwater.com Reconstitution = mixing your peptide powder with bacteriostatic water, Best practice:, Room temp bac water, Inject slowly along vial wall, Avoid foam bubbles, Gently swirl (never shake),