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For research use only. Products sold by Peptide Shop are intended for in-vitro laboratory research only. Not for human or veterinary diagnostic, therapeutic, cosmetic or consumption purposes.
Bacteriostatic water 30 ml product vial
supplies

Bacteriostatic water 30 ml

USP-grade bacteriostatic water with 0.9% benzyl alcohol for laboratory reconstitution workflows. RUO.

USP Grade COA supported RUO
CAS
7732-18-5
Molecular weight
18.02 g/mol
Storage
Room temperature (15-25°C)
Package sizes
10 × 10 mL vials

Description

Bacteriostatic water 30 ml research overview

USP-grade bacteriostatic water with 0.9% benzyl alcohol for laboratory reconstitution workflows. RUO.

Bacteriostatic water is sterile water containing 0.9% benzyl alcohol, used in laboratory workflows where preservative-containing reconstitution solvent is required.

Peptide Shop supplies Bacteriostatic water 30 ml as a sealed research material with lot-level documentation where available. This product is supplied for in-vitro laboratory research only and is not intended for human or veterinary diagnostic, therapeutic, cosmetic or consumption purposes.

Research use

  • Reconstitution of lyophilised research materials
  • Preparation of stock solutions for lab protocols
  • Multi-withdrawal laboratory handling workflows

Use according to validated laboratory protocols and product-specific COA guidance.

Sequence and analytical data

FieldDetail
Product IDsupply-bac-water-10ml
Package size10 × 10 mL vials
CAS number7732-18-5
Molecular weight18.02 g/mol
PurityUSP Grade
StorageRoom temperature (15-25°C)

Batch-specific documentation may include HPLC purity, identity confirmation and lot information. Refer to the supplied COA or the COA policy for current documentation scope.

Reconstitution and handling

Allow lyophilised material to equilibrate before opening to reduce condensation risk. Add validated solvent slowly down the vial wall, avoid vigorous shaking, and record the final concentration in the laboratory notebook or LIMS.

Use aseptic technique, calibrated pipettes or syringes, and validated diluent choices for the assay system. Reconstituted materials should be aliquoted where appropriate to reduce repeated freeze-thaw exposure.

Storage

Store unopened material according to the stated condition: Room temperature (15-25°C). Keep vials sealed, dry and protected from light. Reconstituted solutions should be stored under validated laboratory conditions and discarded according to internal SOPs and applicable research-waste rules.

Research-use statement

Bacteriostatic water 30 ml is sold by Peptide Shop for research use only. It is not a medicine, food, cosmetic, supplement or diagnostic product. Buyers are responsible for ensuring lawful purchase, storage, handling and disposal under their institutional and local requirements.

Sequence & data

Product IDsupply-bac-water-10ml
CAS7732-18-5
Molecular weight18.02 g/mol
PurityUSP Grade

Storage & handling

Room temperature (15-25°C)

Keep lyophilised material sealed and protected from moisture. Reconstituted materials should be handled according to validated laboratory protocols and disposed of as research waste.

Certificate of analysis

Batch-specific COA documentation is supplied according to the COA policy and may include HPLC purity, identity and lot information where available.

Download CoA (PDF) Preview HTML COA policy
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FAQs

What is bacteriostatic water?

Bacteriostatic water is sterile water containing 0.9% benzyl alcohol, which inhibits bacterial growth. It's used to reconstitute lyophilized peptides for multi-use applications.

Why use bacteriostatic water instead of sterile water?

Bacteriostatic water contains benzyl alcohol which prevents bacterial contamination after opening. This allows multiple withdrawals from a vial over several weeks, unlike single-use sterile water.

How long can reconstituted peptides be stored?

Peptides reconstituted with bacteriostatic water can typically be stored at 2-8°C for 2-4 weeks. Always follow the specific guidance for each peptide.

Is your bacteriostatic water pharmaceutical grade?

Yes, our bacteriostatic water meets USP (United States Pharmacopeia) standards for sterility, purity, and benzyl alcohol concentration.

How much bacteriostatic water do I need per peptide vial?

Typically 1-2ml per peptide vial is recommended. The exact amount depends on your desired concentration. Each 10ml vial can reconstitute 5-10 peptide vials.

Can bacteriostatic water be frozen?

Freezing is not recommended as it may affect sterility and cause the vial to crack. Store at room temperature (15-25°C) away from direct light.

How long does bacteriostatic water last unopened?

Unopened bacteriostatic water has a shelf life of 2 years when stored properly. Once opened, use within 28 days.

What size syringe should I use?

We recommend using insulin syringes with a 29-31 gauge needle for accurate measurement. Always use a new sterile syringe for each withdrawal.

What is bacteriostatic water used for?

Bacteriostatic water (0.9% benzyl alcohol in water for injection) is the standard solvent for reconstituting lyophilised research peptides. Benzyl alcohol inhibits bacterial growth, extending the usable shelf life of reconstituted solutions to approximately 28 days when refrigerated.

How much bacteriostatic water should be used to reconstitute a peptide vial?

The volume depends on your target concentration. A common approach is adding 1–2 mL to a 5 mg peptide vial to achieve a 2.5–5 mg/mL stock. Always use a calibrated syringe and aseptic technique.

Can bacteriostatic water be used with all research peptides?

Bacteriostatic water is compatible with most lyophilised research peptides. Some peptides with pH-sensitive structures may require specific solvents. Always check the individual product COA and reconstitution notes.

What is the difference between bacteriostatic water and sterile water?

Bacteriostatic water contains 0.9% benzyl alcohol as a preservative, while sterile water contains no antimicrobial additives. For multi-use peptide vials, bacteriostatic water is preferred as it allows reconstituted solutions to be stored for up to 4 weeks at 2–8°C.