Pure Peptides Australia
Bacteriostatic Water | Pure Peptides Australia
Bacteriostatic Water | Pure Peptides Australia
Not for human, veterinary, diagnostic, or therapeutic use.
Lab supplies
Bacteriostatic Water (10mL and 3mL): The Diluent for Reconstituting Research Peptides
Bacteriostatic water is sterile water for injection with 0.9% benzyl alcohol added as a preservative. The preservative is the point: a lyophilised peptide vial is punctured many times over its 28-day life, and plain sterile water gives bacteria a clean medium after the first puncture. Benzyl alcohol stops them growing, which is why every research supplier and every published reconstitution guide specifies bacteriostatic water as the diluent. Searched as bac water australia, bacteriostatic water australia, bac water 10ml, bacteriostatic water for peptides and where to buy bac water.
Pure Peptides Australia holds bacteriostatic water in Sydney stock in 10mL and 3mL sterile-filled vials with tamper-evident caps. Orders confirmed before 12pm AEST on a business day are dispatched the same day with tracked delivery Australia-wide.
- Bac water
- BAC water
- Bacteriostatic water for injection
- 0.9% benzyl alcohol
- 10mL $29.99
- 3mL $14.99
Bacteriostatic vs sterile vs acetic acid water
Three diluents appear in peptide research. Sterile water for injection has no preservative and suits single-use reconstitution only. Bacteriostatic water adds benzyl alcohol for multi-draw vials, the standard choice for almost every peptide. Acetic acid water (0.6%) is used for a handful of compounds, chiefly IGF-1 LR3 and some growth-factor peptides, that dissolve poorly or degrade at neutral pH. If a compound page does not specify otherwise, bacteriostatic water is the diluent.
Which size
3mL, $14.99
One 5mg or 10mg peptide vial at 1 to 2mL, with a little spare. Included in the Retatrutide Starter Kit. Discard 28 days after first puncture.
10mL, $29.99
Several vials, or one large one: KLOW, GHK-Cu 100mg and NAD+ each need 3 to 10mL on their own. The size most researchers keep on hand.
How much water per vial
The water volume sets the concentration, not the amount of peptide. 2mL into a 10mg vial gives 5mg/mL; 1mL gives 10mg/mL. The calculator does the maths.
Shelf life
Sealed: see the printed expiry, typically two to three years. Opened: 28 days, since the preservative is rated for that many days of repeated puncture.
Specifications
| Product | Bacteriostatic water for injection |
| Also known as | Bac water, BAC water, bacteriostatic saline (incorrect: it contains no salt), BW |
| Composition | Sterile water for injection, 0.9% w/v benzyl alcohol (CAS 100-51-6) |
| pH | 4.5 to 7.0 |
| Vial sizes | 10mL, 3mL |
| Closure | Rubber septum, aluminium seal, tamper-evident flip cap |
| Category | Lab supplies |
| Storage (sealed) | Room temperature, away from light, do not freeze |
| Storage (opened) | Room temperature or refrigerated; discard 28 days after first puncture |
Reconstituting a peptide with bacteriostatic water
Down the wall, swirl, never shake
Swab both septa. Draw the planned volume into a 1mL syringe, insert into the peptide vial and run the water slowly down the inside glass rather than jetting it onto the powder, which can fragment long peptides. Swirl gently or let stand until clear. Label with date and concentration, refrigerate at 2 to 8°C and use within 28 days. Water left in the bacteriostatic vial keeps for its own 28 days from first puncture.
| Peptide vial | Water added | Concentration | 1mg on a U-100 syringe |
| 5mg | 1mL | 5mg/mL | 20 units |
| 10mg | 2mL | 5mg/mL | 20 units |
| 10mg | 1mL | 10mg/mL | 10 units |
| 50mg (GHK-Cu) | 2.5mL | 20mg/mL | 5 units |
Quality
Sterile-filled under aseptic conditions, sealed under a tamper-evident cap, lot-numbered with a printed expiry. Benzyl alcohol content and sterility are batch-tested.
Sydney stock, tracked delivery
Orders cleared before 12pm AEST leave the same business day; Express Post reaches most metro addresses in one to three business days.
Frequently bought together
5 pack $15.99, 10 pack $19.99. For measuring the water in and the aliquots out.
From $99.99. The compound most reconstituted with it.
$29.99. Water, syringes and swabs together.
$19.99. For IGF-1 LR3 and other acid-stable compounds.
Bacteriostatic Water Australia FAQ
What is bacteriostatic water?
Sterile water for injection with 0.9% benzyl alcohol as a preservative, which stops bacteria growing in a vial that is punctured repeatedly. It is the standard diluent for lyophilised research peptides.
Bacteriostatic water vs sterile water?
Sterile water has no preservative and suits single-use only. Bacteriostatic water keeps a multi-draw vial safe for 28 days. For any peptide drawn from more than once, use bacteriostatic.
Can I use saline instead?
Bacteriostatic saline exists but is not the same product and the salt can affect some peptides. Bacteriostatic water contains no salt and is what reconstitution guides specify.
How much water do I add to a peptide vial?
Whatever volume gives a convenient concentration: 2mL into 10mg gives 5mg/mL, so 1mg is 20 units on a U-100 syringe. The water volume does not change how much peptide is in the vial, only how many units carry a given amount.
How long does bacteriostatic water last once opened?
28 days from the first puncture, which is the period the benzyl alcohol is rated for. Sealed vials keep to the printed expiry.
3mL or 10mL?
3mL for one standard peptide vial. 10mL for several vials, or for the large-fill compounds such as KLOW, GHK-Cu 100mg and NAD+ that take 3 to 10mL each.
Can I buy bacteriostatic water at Chemist Warehouse in Australia?
Not reliably. Australian pharmacies rarely stock bacteriostatic water over the counter, which is why it is searched for so often. Pure Peptides Australia holds it in Sydney and ships it with the peptides.
Where can I buy bacteriostatic water in Australia?
From this page. Choose 3mL or 10mL, check out with card, PayID, Osko or bank transfer, and it leaves Sydney the same business day when payment clears before 12pm AEST, tracked to any Australian address.
What does bacteriostatic water cost in Australia?
$14.99 for 3mL or $29.99 for 10mL. No surcharge on PayID, Osko or bank transfer.
