It is the most common single question in this category: thousands of Australians each month search some version of "bacteriostatic water Chemist Warehouse" or check Priceline before trying anywhere else. It is a reasonable instinct. Pharmacies are where sterile water lives. But the shelf logic does not stretch to the preserved version, and knowing why saves an afternoon of running around.
What the pharmacy shelf actually holds
Australian pharmacy chains stock sterile water for injection: small single use plastic ampoules, preservative free, designed to be opened and used immediately, usually alongside injecting equipment for clinical or personal care use. They also stock sodium chloride 0.9% ampoules, which is saline, not water. Both are legitimate products for their intended purpose. Both are single use by design: once the seal is broken there is no preservative protecting the contents, so the remainder is discarded.
What the chains almost universally do not stock is multi-dose bacteriostatic water: sterile water preserved with 0.9% benzyl alcohol, sealed in a vial intended to be entered more than once over several weeks. That product is a laboratory and compounding supply, and it travels through a completely different channel.
Why the preserved version is not on the shelf
Retail pharmacy is built around a dispensing model: a controlled product, dispensed for immediate use, with the pharmacist in the loop. A multi-dose diluent for repeated bench use over weeks does not fit that model. Where preserved water can be sourced through pharmacy at all, it is typically behind a prescription and priced as a clinical service, because that is the supply chain it sits in. The result is predictable: you can buy a ten pack of single use sterile ampoules over the counter, and you generally cannot buy a 30mL multi-dose vial anywhere in the chain.
The practical route
For multi-entry work the product has to come from a specialist supplier. The checklist is short: domestic stock held in Australia rather than drop shipped from overseas, a stated 0.9% benzyl alcohol specification, plain and fast shipping, and a supplier that answers questions the same business day. BuyBac runs exactly that model: bacteriostatic water in 10mL ampoules, 30mL vials and 5 x 10mL bench packs, dispatched daily from Perth, $15 flat shipping Australia wide, free over $150, no account needed.
The sterile water workaround, and its cost
The honest alternative some people take is buying single use sterile ampoules in bulk and accepting the waste: one ampoule per entry, remainder discarded. For occasional single reconstitutions that is perfectly workable. For ongoing multi-entry work it becomes false economy, both in ampoule count and in the constant re-opening of sterile packs. The comparison between the two products, and when each is the right call, is covered in the sterile versus bacteriostatic guide.
Delivery anywhere in Australia
Orders dispatch the next business day from Perth. Metro capitals typically receive orders within two working days, and Perth customers can arrange same day pickup. Every city page covers its own delivery window: Sydney, Melbourne, Brisbane, Adelaide, Canberra, Hobart and Darwin.