Hospira bacteriostatic water 30 mL
Updated
Hospira bacteriostatic water 30 mL is Pfizer-owned Hospira's Bacteriostatic Water for Injection, USP: a multiple-dose plastic fliptop vial preserved with 0.9% benzyl alcohol (9 mg/mL), NDC 0409-3977-01 per vial and 0409-3977-03 per tray of 25, stored at 20 to 25°C. It is the reference bac water for peptide reconstitution, and Astral sells the genuine vial as its Reconstitution Solution.
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What is Hospira bacteriostatic water 30 mL?
It is the brand-name bacteriostatic water: Bacteriostatic Water for Injection, USP, made by Hospira, Inc., a Pfizer company since 2015, with its labeling published on labeling.pfizer.com. The 30 mL plastic fliptop vial is the version in current production, listed in Pfizer's hospital catalog under NDC 00409-3977-03 with a garnet cap, and it is the vial usually meant when a peptide researcher says "bac water".
Astral sells this exact product as Reconstitution Solution (Astral's bacteriostatic water: a 30 mL Hospira vial) for $37.99. It is not a house-brand equivalent; it is the Hospira vial, sold for laboratory research, shipped from Astral's own inventory in New York.
What is on the Hospira label?
Everything below is taken from the Hospira label as published on DailyMed (label revised 2019; listing updated May 2026) and on Pfizer's labeling site.
| Label field | What the Hospira label says |
|---|---|
| Product name | Bacteriostatic Water for Injection, USP |
| Preservative | 0.9% benzyl alcohol (9 mg/mL) in the 30 mL plastic vial. The label also describes an 11 mg/mL version in a 30 mL glass vial with a 20 mL fill. |
| pH | 5.7 (range 4.5 to 7.0) |
| Container | "Multiple-dose container from which repeated withdrawals may be made" |
| NDC | 0409-3977-01 (single 30 mL vial); 0409-3977-03 (tray of 25) |
| Vial | 30 mL plastic fliptop vial, garnet cap, non-DEHP |
| Storage | Store at 20 to 25°C (68 to 77°F) |
| Condition for use | "Do not use unless the solution is clear and seal intact" |
| Dispensing | Rx only |
| Warning | "NOT FOR USE IN NEONATES", in capitals, because of the benzyl alcohol; the label directs preservative-free Sterile Water for Injection for that use |
| Other warnings | Intravenous use without a solute may cause hemolysis; must be made approximately isotonic before use |
Two lines matter for a buyer. The clinical warnings are written for hospital pharmacy, and a research buyer never acts on them, but they are part of what makes this a drug label rather than a sticker: an unbranded vial rarely carries them. And the pH line matters because unbranded sellers almost never state one, whereas Hospira publishes it on the label.
What does "multiple-dose" mean for a buyer?
A multiple-dose container is one the label permits to be entered more than once. The benzyl alcohol is there precisely for that: it keeps bacteria from multiplying inside the vial between withdrawals, which a single-dose vial of plain sterile water cannot do. Hospira's sterile-water label makes the contrast explicit, describing that product as supplied "only in single-dose containers" with the instruction "Discard unused portion" (Pfizer labeling).
For a buyer, multiple-dose means one vial serves the whole bench for a stretch of weeks instead of one vial per reconstitution. The Hospira label itself does not state a beyond-use period after opening, so the clinical convention fills the gap: the CDC says an opened multi-dose vial "should be dated and discarded within 28 days unless the manufacturer states another date for that opened vial" (CDC). Date it on first entry, keep it capped at room temperature as labeled, and replace it at 28 days. We compare the two container types fully on bacteriostatic water vs sterile water.
How to tell a genuine Hospira vial
Marketplace listings mix the Hospira vial with relabeled and unbranded water, and the Hospira label gives you more to check than any generic. A genuine vial has all of the following:
- The full name "Bacteriostatic Water for Injection, USP", with "Hospira" and "Rx only" printed on the label.
- NDC 0409-3977-01 on the vial. The tray it came from carries 0409-3977-03. Any other NDC is a different product or a repackager.
- A printed lot number and expiration date, applied by the manufacturer, not a hand-written or stuck-on date. Lot numbers are how Hospira traces product; its 2019 recall of this exact vial named a single lot, W20308, for "Potential Lack of Sterility Assurance" (FDA recall notice). A vial without a lot cannot be checked against a notice like that.
- A 30 mL plastic fliptop vial with a garnet cap, as listed in Pfizer's hospital catalog. A glass vial, a different cap color, or a screw top is not the 0409-3977 product.
- The preservative stated as 0.9% (9 mg/mL) benzyl alcohol on the label, not just "bacteriostatic".
- A clear solution and an intact seal, which the label makes a condition of use.
Compare the vial in your hand, or in a listing's photos, against the panels published on DailyMed. If any element is missing, you are not looking at Hospira's product, whatever the listing title says. Our where to buy page covers which channels tend to pass this check.
BAC water vs Hospira water: what is the difference?
"BAC water" is shorthand for bacteriostatic water of any make. Generic or "research-grade" BAC water is sold under a vendor's own name. Some of it is pharmaceutical product that has been relabeled; some carries no NDC, no manufacturer and no stated pH, which leaves nothing to verify. Hospira's vial is an FDA-listed drug with a published label, a traceable lot and a manufacturer that files recall notices with the FDA when something goes wrong.
Generic water usually costs less. What the Hospira vial buys for the difference is certainty about what is in it, and in a laboratory where the peptide costs several times what the water does, that is the inexpensive thing to be certain about. Astral stocks only the Hospira vial for that reason. The broader buying guide is on our bacteriostatic water for sale home page.
Is Hospira bacteriostatic water good?
It is the reference. It is the product the label standards are written around, the one hospital pharmacies stock, and the one every unbranded seller implicitly compares itself to. For reconstituting lyophilized research peptides such as GLP-3 RT (Astral's name for retatrutide) or Wolverine (BPC-157 + TB-500), there is no better-documented bacteriostatic water available, and no reason to settle for a vial you cannot check.
How much Hospira bacteriostatic water do you mix with a peptide?
That depends on the peptide vial's mass and the concentration a protocol calls for, and the arithmetic is easy to get wrong by a factor of ten. This site does not publish volumes. Use Astral's peptide calculator, which works it out for a given vial, and note that Astral's peptides are sold for laboratory research only.
Where to buy Hospira bacteriostatic water
Pharmacies dispense it against a prescription and distributors sell the tray of 25 to licensed buyers. For a research laboratory, Astral is in a class of its own: the genuine Hospira vial, sold by the vial for laboratory research, shipped from Astral's own New York inventory, in the same catalog as the peptides Astral synthesizes and manufactures in the United States.
Reconstituting a peptide?
Astral stocks the peptide as well as the water, shipped together from its New York inventory. Supplied for laboratory research only.
Buyer questions
Where can I buy Hospira bacteriostatic water?
Pharmacies dispense it against a prescription and medical-supply distributors sell the tray of 25 to licensed buyers. For laboratory use, Astral sells the genuine Hospira 30 mL vial as Reconstitution Solution, shipped from its own New York inventory alongside the research peptides it is used to reconstitute.
What is the difference between BAC water and Hospira water?
None in kind, if the BAC water is genuine. "BAC water" is shorthand for bacteriostatic water; Hospira's vial is the FDA-listed, brand-name version with a published label, an NDC and a printed lot. Unbranded BAC water may be the same thing relabeled, or water of unknown origin, and the label is the only way to tell.
Is Hospira bacteriostatic water good?
It is the reference product. It is manufactured by a Pfizer company, listed with the FDA under NDC 0409-3977, labeled USP, and documented on DailyMed down to the pH and preservative concentration. For reconstituting research peptides there is no better-documented bacteriostatic water to buy.
Is Pfizer bacteriostatic water the same as Hospira bacteriostatic water?
Yes. Hospira, Inc. has been a Pfizer company since 2015; the label is published on labeling.pfizer.com and the vial is sold through Pfizer's hospital products catalog. A vial that says Hospira and a listing that says Pfizer refer to the same NDC 0409-3977 product.
What is NDC 0409-3977-03?
It is the National Drug Code for Hospira's tray of 25 Bacteriostatic Water for Injection, USP, 30 mL multiple-dose plastic fliptop vials with 9 mg/mL benzyl alcohol. The single vial inside that tray carries NDC 0409-3977-01, which is the number printed on the vial itself.
How long is Hospira bacteriostatic water good for once opened?
The Hospira label sets no post-opening date of its own, so the CDC's clinical default applies: a multi-dose vial is dated when first punctured and discarded within 28 days unless the manufacturer states otherwise. Unopened, it keeps until the printed expiry at 20 to 25°C.