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Frequently Asked Questions.
Bacteriostatic Water is the gold-standard diluent: a laboratory-grade preparation of ultra-pure distilled water containing 0.9% benzyl alcohol as a preservative, 0.22 µm membrane filtered, with a pH of 5.5–7.0 and no buffer. The benzyl alcohol inhibits microbial growth, making it a multi-dose format reusable for up to 28 days after first entry. Pure Vial product is filled into sterilised clear glass vials with a gamma-irradiated rubber septum and centre tear-out crimp seal.