Compare prices and buy peptides in the Reconstitution category from every research peptide vendor, supplier and source we index. Updated daily.
Solvents and diluents used to dissolve lyophilized research peptides before use. They are not peptides themselves but the fluid that turns the vial powder into an injectable solution.
Research peptides ship as lyophilized powder in sealed glass vials, because a dry peptide is far more stable than one in solution. Getting the powder back into solution requires a compatible liquid, and the choice of liquid determines whether the peptide dissolves at all and whether the diluent's own vial can be entered more than once.
Research-peptide vendors stock diluents alongside their peptide inventory. That is why these products appear in a peptide catalog at all, and why they are catalogued separately here.
For the arithmetic that follows reconstitution, PeptideScouter hosts a generic reconstitution calculator that works in milligrams and millilitres and is not tied to any specific compound.
For the surrounding bench consumables (luer-lock syringes, filters, sealed vials, alcohol prep pads and cold storage), see the peptide research supplies checklist.
Bacteriostatic water is sterile water for injection with an added antimicrobial agent. In the products indexed here that agent is benzyl alcohol at 0.9%, 9 mg per mL, added as a bacteriostatic preservative.
The word bacteriostatic is doing precise work. Benzyl alcohol at that concentration inhibits bacterial growth rather than killing bacteria outright. The consequence is that a vial can be entered repeatedly under aseptic technique. USP <797> gives a preserved multiple-dose vial a 28-day beyond-use date after first puncture, unless the manufacturer states otherwise. That is a sterility limit for the diluent and says nothing about how long a dissolved peptide stays intact.
Sterile water for injection is the same base preparation with nothing added: no bacteriostat, no antimicrobial agent, no buffer. It is supplied only in single-dose containers, and that restriction follows directly from the absence of a preservative. Once the container is entered there is nothing preventing microbial growth, so any remainder is discarded.
The trade-off is straightforward. Sterile water avoids benzyl alcohol entirely, which matters where the preservative is contraindicated or where a study design cannot tolerate an added excipient. It costs the ability to draw from the same vial more than once.
Acetic acid water, a dilute sterile solution of acetic acid, exists because some peptides dissolve poorly near neutral pH. A peptide manufacturer's handling guide ties solubility to charge: peptides with more basic than acidic groups may dissolve in dilute acid such as acetic acid, while acidic peptides may dissolve in dilute base instead.
The clearest documented case is IGF-1 LR3, whose cell-culture supplier names dilute acetic acid as its solvent. Manufacturer data sheets and FDA compounding documents describe GHK-Cu, GHRP-2, GHRP-6 and AOD-9604 dissolving in water or neutral buffer, and the acetic acid water page cites the document behind each.
Hospira Bacteriostatic Water is indexed as a separate row from generic bacteriostatic water, and it is the only product on this site split into branded and unbranded rows.
The reason is that Hospira, now part of Pfizer, manufactures Bacteriostatic Water for Injection USP under an FDA-approved application. It is a finished drug product with a manufacturer, a lot number and a label. Drugs@FDA lists Hospira's application as the only active one for bacteriostatic water for injection.
Vendors list the Hospira product by name and price the two very differently, which is why keeping them as one row would make both prices unreadable. Vendor listings use a wide range of shorthand for it, including HBW, BW-H Brand, H Brand and HOS BW.
Every other category on PeptideScouter normalizes to dollars per milligram, because that is the only way to compare a 5 mg vial against a 10 mg vial of the same compound.
Diluents break that. They are sold and priced by volume, in millilitres, and what they carry by mass beyond water is a preservative, a dilute acid or nothing at all. A per-milligram figure for water is not a meaningful number. PeptideScouter therefore does not compute one for this category, and the price statistics shown elsewhere on the site exclude these rows. Diluent pages show the lowest indexed price per millilitre instead.
One preservative. Bacteriostatic water is sterile water for injection with an added antimicrobial agent, 0.9% benzyl alcohol (9 mg per mL) in the products indexed here. The agent is bacteriostatic, meaning it inhibits bacterial growth rather than killing bacteria outright. That preservative is what allows a vial to be entered repeatedly under aseptic technique, and USP <797> gives a preserved multiple-dose vial a 28-day beyond-use date after first puncture, a sterility limit for the diluent that says nothing about how long a dissolved peptide stays intact. Sterile water for injection contains no bacteriostat, no antimicrobial agent and no buffer, and is supplied only in single-dose containers, because with nothing inhibiting microbial growth any remainder has to be discarded. Sterile water is the choice where benzyl alcohol is contraindicated or where a study design cannot tolerate an added excipient.
Because they are not the same kind of product, and their prices differ enough that combining them would make both unreadable. Hospira, now part of Pfizer, manufactures Bacteriostatic Water for Injection USP as a finished FDA-approved drug product with a manufacturer, lot number and label. Drugs@FDA lists Hospira's application as the only active one for bacteriostatic water for injection. Vendors list the Hospira product by name, so PeptideScouter keeps it as its own row. Vendor listings abbreviate it in many ways, including HBW, BW-H Brand, H Brand and HOS BW, all of which map to the same page here.
Because dollars per milligram is not a meaningful measure for a solvent. Every other category on this site normalizes prices to dollars per milligram, which is the only way to compare a 5 mg vial against a 10 mg vial of the same peptide. Diluents are sold and priced by volume in millilitres, and what they carry by mass beyond water is a preservative, a dilute acid or, in the case of sterile water, nothing at all. PeptideScouter does not compute a per-milligram figure for this category, and the per-milligram statistics shown elsewhere on the site exclude these rows. Diluent pages show the lowest indexed price per millilitre instead.
Mainly basic peptides that dissolve poorly near neutral pH. A peptide manufacturer's handling guide lists dilute acid such as acetic acid as an option for peptides with more basic than acidic groups, and dilute base for acidic ones. IGF-1 LR3 is the documented case, since its cell-culture supplier names dilute acetic acid as its solvent. Manufacturer data sheets and FDA compounding documents describe GHK-Cu, GHRP-2, GHRP-6 and AOD-9604 dissolving in water or neutral buffer.
42 vendors tracked by PeptideScouter sell Reconstitution peptides, across 130 listings covering 4 compounds. The widest Reconstitution catalogs belong to Biotech Compounds (3 peptides), Disguised Alpha (3 peptides), ezPeps (3 peptides). Prices are refreshed daily.
The most widely sold Reconstitution peptides on PeptideScouter (by vendor count) are: Bacteriostatic Water, Hospira Bacteriostatic Water, Acetic Acid, Sterile Water. Each peptide page shows current pricing across every tracked vendor.
