Reconstitution Solution for Laboratory Use Uses of Bacteriostatic Water for Injections and Where to Get It Bottled water often carries an expiration or best by date, but pure water itself does not expire or spoil, as it lacks nutrients for bacteria growth. The date primarily concerns the plastic bottle: How long do you use you Bac water for? : r Retatrutide Bacteriostatic water for injection Bac water Free shipping