Blog

Notes and updates. For the reference material, see the guides.

• Reconstituting Fertility & Hormone Medications (hCG, HGH, Somatropin) HCG mixing water, HGH and fertility medication diluents: what the SmPCs say about solvents and 28-day storage, plus the IU-per-unit maths for each product.
• Bacteriostatic Water vs. Sterile Water: Differences, Safety, and Stability Bacteriostatic water vs sterile water: what 0.9% benzyl alcohol does, when each diluent is appropriate, and why multi-dose vials need a preservative.
• How to Store Bacteriostatic Water: Shelf Life, Expiration, and the 28-Day Rule How to store bacteriostatic water before and after opening, where the 28-day rule comes from, what the expiry date means and when to discard a vial.
• Ingredient Deep-Dive: Why Reconstitution Diluents Use 0.9% Benzyl Alcohol Why bacteriostatic water with benzyl alcohol at 0.9% is the standard mixing water for injections: how it works, its safety limits and the neonatal warning.