What is bacteriostatic water?

Sterile water for injection with 0.9% benzyl alcohol added as a bacteriostatic preservative. The preservative allows the same vial to be entered multiple times without harboring microbial growth — which is why it’s the standard diluent for reconstituting multi-dose research compounds.

Bacteriostatic vs. sterile water — what’s the difference?

Sterile water is single-use only — once punctured, contamination risk climbs fast. Bacteriostatic water contains benzyl alcohol, which suppresses bacterial growth and lets you draw from the same vial across multiple sessions (up to 28 days is the common lab standard).

How to reconstitute cleanly

• Swab both vial stoppers (BAC water and the lyophilized compound) with fresh 70% isopropyl.
• Draw the intended volume of BAC water into a sterile syringe. Aim the needle at the inside wall of the compound vial — not directly onto the powder pellet — and let the diluent run down the glass.
• Do not shake. Swirl gently until fully dissolved.
• Store reconstituted compound refrigerated (2–8 °C). Label with reconstitution date.

How much do I need?

A single 10 mL vial reconstitutes roughly 8–10 standard research vials depending on your target concentration. Most labs go through a 6-pack in a month; the 24-case is a quarterly buy for a small operation.

Storage & shelf life

Unopened vials: room temperature, out of direct sunlight. Once punctured: refrigerate at 2–8 °C and discard after 28 days. Every ReconKit vial ships with a lot code and manufacture date printed on the label.

Ready to stock up?

Single vials for one-off protocols. 3-packs for weekend research. 6-cartons for the month. Cases of 24 for the quarter. All shipped from the United States, in stock, no bottlenecks.