Bacteriostatic (BAC) Water

[ back-teer-ee-o-stat-ick wah-tur ]

Bacteriostatic or BAC water is highly pure water for pharmaceutical use. A bacteriostatic agent or bacteriostat is a biological or chemical agent that stops bacteria from reproducing, while not necessarily killing them otherwise. Bacteriostatic water is used for the reconstitution of lyophilized peptides to ensure purity.