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Bacteriostatic water
Bacteriostatic water 10 ml
Peptology Ltd. · Solutions for peptides
Bacteriostatic water is a sterile water with 0.9% benzyl alcohol for peptide reconstitution that Peptology supplies strictly for laboratory research, in 10 ml. You can buy Bacteriostatic water in Cyprus online from €8.00, with same-day dispatch for orders placed by 15:00. 99%+ purity, HPLC/MS certificate for every batch, so every vial comes with documented quality data. Delivery in 5–7 working days with BOX NOW, free from €50; you pay on delivery – by card through the BOX NOW payment link, before you open the locker. The product is not intended for human or veterinary use.
8,00 € · In stock
For research use only / Not a medicine
| Purity | >99% |
|---|---|
| Method | HPLC + LC/MS |
| Laboratory | Analiza Białek |
What is Bacteriostatic water?
Bacteriostatic water is a sterile, non-pyrogenic solution with 0.9% benzyl alcohol (9 mg/ml), for reconstitution and multiple dilution of peptides and hormones. The benzyl alcohol acts as a preservative — it allows multiple withdrawals from the same vial for up to 28 days. It belongs to the category of peptide solutions; for greater stability we recommend Peptide Matrix Water™.
Important: Diluent/solvent — research material, not a pharmaceutical product, not for standalone use.
Peptology offers bacteriostatic water 10 ml with laboratory analysis for every batch. For research/laboratory use only.
Composition: 10 ml (0.9% benzyl alcohol)
VOLUME
10 ml sterile solution in a multi-dose vial.
PRESERVATIVE
0.9% benzyl alcohol (9 mg/ml).
pH / DURATION
pH ~5.7; up to 28 days after opening.
How it works
PRESERVATION
Inhibits bacteria across multiple punctures.
RECONSTITUTION
Dissolves lyophilised peptides into a clear solution.
MULTIPLE DOSES
Multiple withdrawals from one vial for up to 28 days.
The most common laboratory solvent for peptides. For greater stability consider Peptide Matrix Water™ (up to 60 days).
Technical specifications
- Composition: water for injection + 0.9% benzyl alcohol (9 mg/ml)
- Characteristics: sterile, non-pyrogenic, clear, colourless
- pH: ~5.7 (4.5–7.0) · Volume: 10 ml
- Duration: up to 28 days after opening (CDC/FDA standard)
Comparison: Bacteriostatic water vs Peptide Matrix Water™ vs Acetic acid
In the peptide solutions category there are three main solvents, each for a different scenario.
| Bacteriostatic water (this page) | Peptide Matrix Water™ ★ RECOMMENDED BY PEPTOLOGY |
Acetic acid 0.6% | |
|---|---|---|---|
| Active composition | 0.9% benzyl alcohol | Premium stabilising formula | 0.6% acetic acid |
| Ideal for | Typical multi-dose reconstitution | Maximum stability and longer storage | Poorly soluble peptides |
| Preservation (multiple withdrawals) | Yes (up to 28 days) | Yes (up to 60 days) | Limited |
| Stability after dissolving | Typical | Prolonged (premium) | Variable |
| Volume | 10 ml | 10 ml | 10 ml |
Our recommendation: for most protocols we recommend Peptide Matrix Water™ — it extends the life of the dissolved peptide up to 60 days (more than double the time of bacteriostatic water). Bacteriostatic water remains an excellent, economical standard; for maximum duration choose Peptide Matrix Water™.
With which peptides
- Regenerative: BPC-157, TB-500, GHK-Cu
- GH-related: GHRP-2, CJC-1295, Ipamorelin
- GLP-1 agonists: Semaglutide, Tirzepatide
Some substances may not be compatible with benzyl alcohol — follow the manufacturer’s instructions.
Profile at a glance
Precautions
- Not to be used in neonates; unsuitable for epidural/intrathecal administration
- Not intravenous as monotherapy — solutions must be isotonic
- Visual inspection before use; do not use if cloudy or containing particles
Related products
Peptide Matrix Water™
Premium solution — up to 60 days
Acetic acid 0.6%
For poorly soluble peptides
TB-500
Regenerative peptide
Semaglutide
GLP-1 agonist
Research warning: Bacteriostatic water is offered exclusively for research/laboratory purposes as a diluent/solvent. It is not a pharmaceutical product, is not approved for use in humans/animals and does not replace medical advice. It is not intended for standalone use.
How does it differ from Peptide Matrix Water™ and acetic acid?
Bacteriostatic water is the standard for multi-dose reconstitution (up to 28 days). Peptide Matrix Water™ is premium (up to 60 days) and 0.6% acetic acid helps with poorly soluble peptides.
Buy Bacteriostatic water in Cyprus – price
You can buy Bacteriostatic water in Cyprus online from Peptology. Prices by strength:
- Bacteriostatic water: €8.00
Orders placed by 15:00 on working days ship the same day and are delivered in 5–7 working days with BOX NOW. Shipping costs €2 and is free from €50; you pay on delivery – by card through the BOX NOW payment link, before you open the locker.
Bacteriostatic water 10 ml: which strength
Bacteriostatic water is available in: 10 ml.
How to use
- Disinfect the stoppers with a 70% alcohol wipe before each puncture
- Add the solvent slowly down the wall — not onto the powder
- Wait 10–15 minutes, swirling gently. Do not shake (foam → denaturation)
- The solution should be clear, without particles
- Calculate volumes with the peptide calculator
Storage
- Temperature: 20–25 °C; do not freeze
- After opening: up to 28 days (CDC/FDA standard)
- Discard if loss of sterility or cloudiness is suspected
Laboratory protocol — reconstitution, research protocols, storage
Standard protocol, applicable to all research peptides in the Peptology catalogue. For the concentration of the solution (mg/mL) per vial, use the peptide reconstitution calculator.
The 60-second protocol
1. SOLVENT
2. RECONSTITUTION
The solvent is added to the wall of the vial, without agitation, then wait 10–15 minutes.
3. CALCULATION
Calculator → concentration in mg/mL
4. STORAGE
+2 °C to +8 °C, up to 60 days with Peptide Matrix Water
Quick reference
| Parameter | Value |
|---|---|
| Form | Lyophilised powder |
| Solvent | Peptide Matrix Water |
| Volume for reconstitution | 1–3 mL — 3 mL maximum (capacity of the standard vial) |
| Storage before reconstitution | Room temperature, protected from direct light (refrigeration is not mandatory) |
| After reconstitution | Up to 60 days at +2 °C to +8 °C with Peptide Matrix Water |
What you will need
Precision pipette
Calibrated, 100–1000 µL — for accurate measurement of the volume of solvent added to the vial.
70% alcohol pads
Two pads — to disinfect the peptide vial and the solvent vial.
Stabilised solvent for lyophilised peptides. Why this one.
Five rules for reconstitution
| ✅ Correct | ❌ Wrong |
|---|---|
| Disinfect the stoppers and the work surface with 70% alcohol, work with gloves | Working without disinfection |
| The solvent is added slowly down the wall of the vial | Direct jet onto the powder — foaming and denaturation |
| Light swirling between the palms | Shaking — foam, on which the peptides denature |
| Wait 10–15 minutes at room temperature | Mechanical mixing or heating |
| Visual inspection: clear, without particles | Using a cloudy or coloured solution |
Calculating the concentration
⚠️ Maximum 3 mL of solvent. The standard vial does not allow a larger volume — do not exceed it during reconstitution.
- Concentration (mg/mL) = mg in the vial ÷ mL of solvent
- Volume per sample (mL) = amount per sample (mg) ÷ concentration (mg/mL)
- 1 mg/mL = 1 µg/µL · 1 mL = 1000 µL
👉 For any vial and solvent volume — use the calculator. It calculates the concentration (mg/mL, µg/µL) and the volume per sample (mL, µL).
Storage
BEFORE RECONSTITUTION
Room temperature, protected from direct light, in the original packaging. Refrigeration is not mandatory.
AFTER RECONSTITUTION
+2 °C to +8 °C, up to 60 days with Peptide Matrix Water. Discard the remainder after this period.
FREEZING
Not recommended. Freeze/thaw cycles degrade the structure of the peptide.
Four mistakes to avoid
1. Shaking for “faster dissolution”
Foam = denaturation. Only gentle swirling between the palms.
2. Unsuitable solvent
For the stability of the peptide structure, use only a sterile, purpose-designed solvent — Peptide Matrix Water is recommended.
3. Ignoring slight cloudiness
If it is not completely clear = the sample does not meet the criteria for work.
4. Removing it from the refrigerator “for an hour or two”
Short exposures add up and jeopardise stability.
Research status: All Peptology products are intended exclusively for laboratory use and research. They are not pharmaceutical products, have not been approved for human or veterinary use and do not replace medical advice. The protocol described is standard laboratory practice for working with lyophilised peptides.
How is bacteriostatic water stored?
Before opening it is stored at room temperature , protected from direct light. After opening and reconstitution – in the refrigerator, at 2–8 °C , without refreezing. Reconstituted peptide solutions are also stored in the refrigerator.
How is it used to reconstitute peptides?
The solvent is added slowly, down the wall of the vial containing the peptide, without vigorous agitation; the vial is swirled gently until fully dissolved. For the exact calculation of volume and concentration, use the peptide reconstitution calculator . A typical vial usually holds up to ~3 mL of solvent.
Purity and certificate of analysis
99%+ purity, HPLC/MS certificate for every batch.
Shipping and payment
Orders placed by 15:00 on working days ship the same day and are delivered in 5–7 working days with BOX NOW. Shipping costs €2 and is free from €50; you pay on delivery – by card through the BOX NOW payment link, before you open the locker.
🚚 Delivery information
- Orders placed by 15:00 are dispatched the same day, delivery in 5–7 working days.
-
Shipping with BOX NOW, chosen at checkout. Free shipping from €50, otherwise €2.
Frequently asked questions about Bacteriostatic water
Where can I buy Bacteriostatic water in Cyprus and what does it cost?
In Cyprus you can buy Bacteriostatic water online from Peptology, from €8.00. Delivery in 5–7 working days with BOX NOW, free from €50; you pay on delivery – by card through the BOX NOW payment link, before you open the locker.
What is Bacteriostatic water?
Bacteriostatic water is a sterile, non-pyrogenic aqueous solution containing 0.9% (9 mg/mL) benzyl alcohol as a preservative. The benzyl alcohol inhibits the growth of bacteria, allowing multiple withdrawals from the same vial. In a laboratory context, it is the most widely used medium for the reconstitution (dissolving) of lyophilised research peptides.
How many vials can be reconstituted with 10 ml?
Depending on the concentration, one 10 ml vial is usually enough for 5–10 peptide vials (1–2 ml per vial).
Which side effects have been reported in clinical studies of Bacteriostatic water?
Bacteriostatic water is a reconstitution solution for laboratory use and has not been studied in clinical trials as an active substance. It is not intended for human or veterinary use.
How long does delivery take and how do I pay?
Orders placed by 15:00 on working days ship the same day and are delivered in 5–7 working days with BOX NOW. Shipping costs €2 and is free from €50; you pay on delivery – by card through the BOX NOW payment link, before you open the locker.