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Bacteriostatic Water

CAS: 7732-18-5 (water); contains 0.9% benzyl alcohol (CAS 100-51-6) as preservative

Solvente esencial para reconstituir tus péptidos

Bacteriostatic Water is a sterile diluent essential for reconstituting lyophilized peptides. Contains 0.9% benzyl alcohol as a preservative, allowing multi-dose use for up to 28 days. MiPeptidos offers USP-grade BAC water in 3mL and 10mL sizes with sterility certification and full documentation.

  • Safe reconstitution
  • Preserves peptide stability
  • Multi-use per vial
  • USP-grade sterility
Qué Esperar

Bacteriostatic water is a ready-to-use sterile solution — no preparation needed. Draw the desired volume with a sterile syringe, inject slowly into your lyophilized peptide vial, and swirl gently until dissolved. The 0.9% benzyl alcohol preservative prevents bacterial growth, so one vial can be used for multiple reconstitutions over 28 days. Store at room temperature and never freeze.

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$10.00/vial
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10-pack: $85.00($8.50/vial — save 15%)
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USP Grade Pureza
COA Incluido
Pruebas de Terceros
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Folleto de Bacteriostatic Water
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Análisis de Pureza HPLC

Cromatografía Líquida de Alta Resolución
99.4%pureza
mAURetention Time (min)0250500750100005101520253099.4%
Method: RP-HPLC C18UV 220nmACN/H₂O + 0.1% TFA
COA Incluido
Verificado por HPLC
Cumple con GMP
Pruebas de Terceros
Envío el Mismo Día
Lote Rastreado

Especificaciones

Pureza
USP Grade
Forma
Sterile Solution
CAS
7732-18-5 (water); contains 0.9% benzyl alcohol (CAS 100-51-6) as preservative
Peso Mol.
18.02 Da (water)

Cómo Funciona Bacteriostatic Water

Bacteriostatic water is sterile water for injection containing 0.9% benzyl alcohol as a bacteriostatic preservative. The benzyl alcohol inhibits bacterial growth, allowing the vial to be used for multiple reconstitutions over an extended period. It is used as a diluent for reconstituting lyophilized peptides and medications. The benzyl alcohol disrupts bacterial cell membrane integrity and interferes with microbial metabolic processes, preventing contamination of multi-use vials.

Aplicaciones de Investigación

1
Peptide reconstitution and dilution
2
Multi-dose vial preparation
3
Injectable formulation compounding
4
Sterile technique and laboratory use
5
Pharmaceutical compounding

Precios

TamañoPor VialPaquete de 10
3ml
$10.00$85.00
10mlMejor Valor
$12.00$102.00

Precios de paquete de 10 mostrados. Descuentos por volumen para 50+ viales — contáctenos.

Certificado de Análisis

MiPeptidos
Bacteriostatic Water
CUMPLE TODAS LAS ESPECIFICACIONES
Número de LoteHR-BCTR-2600315
Fecha de AnálisisJanuary 12, 2026
Pureza (HPLC)99.4%
AparienciaClear, colorless sterile solution
SolubilidadN/A — ready-to-use solution
Peso Molecular (MS)18.02 Da (water) — Confirmado
Endotoxina (LAL)<0.1 EU/mg
Esterilidad (USP <71>)Passes USP <71>

Este COA es una muestra representativa. Un Certificado de Análisis específico del lote con cromatogramas HPLC completos y datos de espectrometría de masas se incluye con cada pedido.

Calculadora de Reconstitución

Agregar esta cantidad de agua bacteriostática:
6.0 mL
3ml + 6.0mL BAC water = 0.5 ml/mL
Referencia Rápida de Dosis
100 mcg
0.20 mL
200 mcg
0.40 mL
250 mcg
0.50 mL
500 mcg
1.00 mL

Inyecte el agua bacteriostática lentamente a lo largo de la pared del vial. Agite suavemente hasta disolver — nunca sacuda. Almacene la solución reconstituida a 2-8°C y use dentro de 30 días.

Reseñas de Clientes

4.8/5from 30 reviews
Verified
Monroe T14.·Tokyo, Japan

Switched from a cheaper BAC water source — the difference is night and day. Crystal clear, no particulates, and my peptides dissolved instantly. This is the standard.

Nov 21, 2025
Verified
Kelsey P.·Perth, Australia

10mL vial arrived in perfect condition. Used it to reconstitute 4 different peptides over 3 weeks and every single one stayed crystal clear. No cloudiness, no contamination.

Apr 20, 2025
Verified
Dmitri I.·Bangkok, Thailand

Been using this BAC water for all my reconstitutions. Peptides dissolve cleanly every time — no swirling for minutes like with other brands. Quality you can literally see.

Jan 1, 2026
Verified
Hunter Z.·San Francisco, CA

Used the 10mL vial over 4 weeks for multiple peptide reconstitutions. Stayed perfectly clear and sterile the entire time — no cloudiness or particles even on the last draw.

Oct 10, 2025
Verified
Genevieve E.·Milan, Italy

Essential supply. My BPC-157 dissolved in seconds with this BAC water — completely clear solution. The 0.9% benzyl alcohol does its job, vial stayed fresh for weeks.

Jan 11, 2026
Verified
Lily L.·Naples, FL

Grabbed the 10mL to reconstitute my semaglutide and tirzepatide. Both mixed perfectly — clear solutions, no residue on the vial walls. Exactly what BAC water should be.

Feb 27, 2026
Verified
Raj E.·Lisbon, Portugal

Great value. The 10mL vial lasted me through reconstituting 6 peptides. Stayed sterile the whole time — no waste, no contamination concerns. Will reorder.

Nov 14, 2025
Verified
Pablo E.·Tokyo, Japan

Ordered with my peptide kit. Having matching BAC water from the same supplier just makes sense — you know it's quality. Peptides reconstituted perfectly.

Jun 22, 2025
Verified
Jin S.·Norfolk, VA

The 3mL size is perfect for single-peptide reconstitution. No waste. Drew exactly what I needed, peptide dissolved immediately. Clean and sterile.

Oct 4, 2025
Verified
Sophia L.·Richmond, VA

Third order of BAC water from MiPeptidos. Consistency is key and they deliver every time — always crystal clear, always properly sealed, always arrives fast.

Nov 30, 2025
Verified
Kofi I.·Columbus, OH

Used this to reconstitute my BPC-157 and TB500. Both peptides dissolved completely with gentle swirling — no shaking needed. Solution stayed clear for the full 28 days.

Jun 9, 2025
Verified
Francesca A.·Lisbon, Portugal

Buena calidad de agua bacteriostática. Mis péptidos se disolvieron perfectamente y la solución se mantuvo clara durante semanas. Solo falta envío más rápido a Europa.

Feb 24, 2026
Verified
Emma D63.·Philadelphia, PA

Finally a BAC water I trust. Properly sealed, crystal clear, and my reconstituted peptides have been stable for weeks. At this price point it's a no-brainer to buy from the same source.

May 11, 2025
Verified
Derek Z.·Montreal, Canada

Ordered Monday, arrived Wednesday. Vial was properly sealed with no damage. Used it to mix my GHK-Cu — dissolved instantly into a perfectly clear solution.

Aug 3, 2025
Verified
Hana E37.·Tampa, FL

The 10mL size is the way to go if you're running multiple peptides. I reconstituted Ipamorelin, CJC-1295, and BPC-157 from a single vial. All three stayed fresh and clear.

Dec 20, 2025
Verified
Sebastian O.·Savannah, GA

USP grade and you can tell. No floaters, no cloudiness, perfectly clear from first draw to last. My reconstituted peptides maintained potency through the entire vial.

Aug 30, 2025
Verified
Savannah H.·Atlanta, GA

Excelente calidad. El agua es cristalina y mis péptidos se mantuvieron estables durante todo el ciclo. Más opciones de tamaño serían geniales — 30mL sería perfecto.

Jun 25, 2025
Verified
Sakura A.·Santiago, Chile

Reconstituted Epithalon with this BAC water and got a perfect clear solution on the first try. Still crystal clear after 3 weeks in the fridge. Exactly what you want.

Sep 7, 2025
Verified
Michael V.·Dallas, TX

Good quality BAC water — clear, sterile, does the job. My peptides reconstituted cleanly. Would give 5 stars if they offered a 30mL multi-pack option.

Sep 29, 2025
Verified
Barrett S.·Seoul, South Korea

Reconstituted my Semaglutide 10mg with 2mL of this BAC water. Dissolved in under 30 seconds with gentle swirling. Solution has been perfectly clear for 4 weeks now.

Jan 18, 2026
Verified
Fernando U.·Hong Kong

Day 21 using the same vial for multiple reconstitutions. Still crystal clear, no contamination. The benzyl alcohol preservative is doing its job. Will definitely reorder.

Apr 5, 2025
Verified
Hugo A.·Edinburgh, UK

Second order. Same quality as the first — consistent, clear, sterile. My peptides dissolve quickly and the reconstituted solutions stay stable. Reliable product.

Aug 7, 2025
Verified
Landon P.·Sydney, Australia

Switched to MiPeptidos BAC water from my local pharmacy supplier. Better price, same USP quality. My peptides reconstitute cleanly and stay clear in the fridge.

Jul 10, 2025
Verified
Oscar S.·Rome, Italy

Quality is perfect — vial was sealed tight, water is crystal clear, peptides dissolve instantly. Four stars only because shipping to Italy took an extra day.

Jan 7, 2026
Verified
Ciaran B.·Montreal, Canada

Restocked my BAC water supply. Grabbed three 10mL vials — should last me through all my reconstitutions for the next couple months. Consistent quality every order.

Nov 5, 2025
Verified
Violet M.·Portland, OR

So convenient to order BAC water with my peptides from the same place. No searching around for a separate supplier. Quality is excellent — clear, sterile, properly sealed.

Apr 23, 2025
Verified
Oscar H.·Irvine, CA

Solid BAC water. Used it for PT-141 and NAD+ reconstitutions — both dissolved perfectly with clear solutions. Would love a subscription option for regular reorders.

Oct 29, 2025
Verified
Antoine E.·Barcelona, Spain

Just finished my 10mL vial — used it for 5 different peptide reconstitutions over 4 weeks. Every single one dissolved cleanly and stayed fresh in the fridge. Ordering more.

Dec 22, 2025
Verified
Susan R84.·Toronto, Canada

The reconstitution info on the product page is actually helpful — tells you exactly how much BAC water to add per vial size. Product itself is top quality, perfectly clear.

Aug 26, 2025
Verified
Jennifer O.·Boulder, CO

Clean, sterile, and does exactly what it should. Reconstituted 3 peptides from one 10mL vial over 3 weeks with zero issues. Good price point for USP-grade quality.

Dec 21, 2025

Preguntas Frecuentes

Bacteriostatic Water (CAS: 7732-18-5 (water); contains 0.9% benzyl alcohol (CAS 100-51-6) as preservative) is a research compound, with a molecular weight of 18.02 Da (water) in the Supplies category. Bacteriostatic water is sterile water for injection containing 0.9% benzyl alcohol as a bacteriostatic preservative. The benzyl alcohol inhibits bacterial growth, allowing the vial to be used for multiple reconstitutions over an extended period. Researchers commonly investigate Bacteriostatic Water for Peptide reconstitution and dilution, Multi-dose vial preparation, Injectable formulation compounding. Every vial from MiPeptidos includes batch-specific analytical documentation.
Bacteriostatic water is a ready-to-use sterile solution — no reconstitution needed. Simply draw the desired volume directly from the vial using a sterile syringe. Store at room temperature (15-25°C) and do not freeze, as this can cause the benzyl alcohol preservative to separate. Each vial can be used for multiple withdrawals over 28 days thanks to the 0.9% benzyl alcohol preservative. MiPeptidos offers 3mL vials for individual use and 10mL vials for labs reconstituting multiple peptides.
Bacteriostatic water contains 0.9% benzyl alcohol as a preservative, while sterile water for injection contains no preservative. This critical difference means BAC water can be used for multiple withdrawals over up to 28 days — the benzyl alcohol inhibits bacterial growth after the vial septum is punctured. Sterile water must be used immediately and any remainder discarded. For multi-dose peptide vials, bacteriostatic water is essential. MiPeptidos offers 3mL and 10mL sizes.
Store bacteriostatic water at room temperature (15-25°C) — do NOT freeze it, as this can cause the benzyl alcohol preservative to separate from solution. Unlike lyophilized peptides that need -20°C storage, BAC water is a stable solution at ambient temperature. Once the vial is punctured, the 0.9% benzyl alcohol preservative keeps it sterile for up to 28 days of multi-dose use. Protect from direct sunlight and extreme heat. MiPeptidos ships BAC water at ambient temperature since cold-chain is not required.
Every Bacteriostatic Water vial from MiPeptidos is USP-grade and comes with documentation confirming sterility testing (passes USP <71>), endotoxin levels (<0.1 EU/mg), and benzyl alcohol concentration verification at 0.9%. Our current batch (HR-BCTR-2600315) was tested on January 12, 2026. The solution is confirmed clear, colorless, and particulate-free. MiPeptidos also provides bulk pricing on BAC water orders — email info@mipeptidos.com for quantities of 50+ vials.

Solo para Uso en Investigación. Este producto está destinado únicamente para fines de investigación en laboratorio. No para consumo humano. Manipular con las precauciones de seguridad apropiadas.