Reconstitution Solution (bacteriostatic water)
Sterile water with 0.9% benzyl alcohol · solvent for lyophilized reference materials
Reconstitution solution is the companion material to a lyophilized research peptide: it is what brings the dry powder into solution so it can be handled in a laboratory setting. It is a solvent, not a peptide, and it carries no purity specification of the kind published on a peptide Certificate of Analysis. For research use only. Not for human or veterinary use, diagnostic use, or in any therapeutic application.
What it is
Reconstitution solution is sterile water containing 0.9% benzyl alcohol. Benzyl alcohol is bacteriostatic — it suppresses microbial growth rather than sterilising on contact — which is why a vial can be entered more than once across a research protocol without the contents spoiling as quickly as plain water would. Glow supplies it as Reconstitution Solution 10ML.
Why not plain sterile water
Sterile water contains no preservative. It is appropriate for single-session work where the vial is prepared and consumed at once, but it offers nothing against contamination introduced on a second entry. The practical difference is vial lifetime, not strength: the peptide concentration is set by the volume added, and is identical either way. The bacteriostatic vs sterile water reference compares the two side by side.
How much to stock
A common companion ratio is one 10 mL vial of solvent per roughly two vials of lyophilized peptide, though the volume a protocol actually calls for is what sets the working concentration. Researchers reconstituting at lower concentrations get through solvent faster.
Handling & storage
- Store at room temperature, out of direct light; do not freeze.
- Wipe the stopper with alcohol before each entry and use a fresh needle each time.
- Introduce the solvent slowly down the inside wall of the peptide vial rather than directly onto the powder, then swirl — never shake.
- Once a peptide is reconstituted, the solution is refrigerated and is less stable than the sealed powder was.
The full step-by-step is in the reconstitution & storage reference.
Frequently asked questions
Is reconstitution solution the same as bacteriostatic water?
Yes — "bacteriostatic water" is the common name for sterile water containing 0.9% benzyl alcohol, which is what this product is.
Does it have a purity percentage like the peptides do?
No. The >=99.2% purity floor and per-lot Certificate of Analysis apply to peptide reference materials. A solvent is specified by its composition — sterile water with 0.9% benzyl alcohol — not by a peptide purity assay.
How much do I need per peptide vial?
A common companion ratio is one 10 mL solvent vial for roughly every two vials of lyophilized peptide, but the exact volume is chosen per protocol because it determines the resulting concentration.
Is this for human use?
No. This is a laboratory research material supplied for in-vitro and preclinical research only — not for human or veterinary use, diagnostic use, or any therapeutic application.