Reconstitution Solution for Laboratory Use What Type of Water Should Be Used for Peptides? Bacteriostatic Water Bac Water by Hospira Mountainside Medical Buy BAC Water Online Direct Peptides High Quality 3ml BAC Water for Medical Use Nugenyx Your eyes are your first line of defense. Good BAC Water: Crystal clear, odorless (faint alcohol scent), and painless. Bad BAC Water: Cloudy, particulate matter, strong chemical smell, or severe burning.