Sentir Sciences

Sentir H₂O

BACTERIOSTATIC WATER · 0.9% BENZYL ALCOHOL

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Purity (HPLC)99.99%
CAS number7732-18-5
Molecular formulaH2O + 0.9% C7H8O
Molar mass18.02 g/mol
Endotoxin (LAL)< 0.5 EU/mg
FormatSterile liquid, 10 ml vial
SKUH2O-10ML

Sterile water for reconstitution with 0.9% benzyl alcohol as a bacteriostatic preservative — the standard diluent for preparing peptide solutions from lyophilized powder.

ReconstitutionSolution preparationMulti-draw protocols

Keep the sealed vials in the fridge and out of direct light — they’ll hold up for a long time that way. Once a vial is mixed, keep it refrigerated and use it within the window your protocol calls for.

Every batch we sell is tested by an independent U.S. lab before it goes up for sale — that report is the certificate of analysis, and a copy is included with every order. Want the one for your exact vial? Email the lot number printed on the label to [email protected] and we’ll send it over within one business day.

Don’t take our word for it.

Rated 4.9 out of 5 stars on Trustpilot

Rated Excellent — 4.9 out of 5 on Trustpilot

Rated 5 out of 5 stars

I NEVER WRITE REVIEWS

From all my experiences and different companies I've tried, this one just stuck out to me. Best customer service I’ve ever spoken with, extremely fast shipping, got my order in 3 days, great quality and they are extremely consistent with every order I place! I would reccomend Sentir time and time again and I’m super glad I found them.

Brad PPosted on Trustpilot · Aug 2026
Rated 5 out of 5 stars

10/10 experience

10/10 experience! Quality product, their tracking system is extremely useful and transparent, it came in extremely nice packaging and i'm honestly super glad i trusted them with my money, I am now a customer for life!

Dustin PPosted on Trustpilot · Aug 2026
Rated 5 out of 5 stars

I love Sentir Sciences

I’ve been using Sentir since May and they’ve came so far and the business has grown so much, the presentation, customer service, shipping times are really just outstanding. Best prices I’ve seen anywhere too. I love sentir sciences

Dylan MPosted on Trustpilot · Aug 2026
Rated 5 out of 5 stars

Every interaction has been amazing

I’ve been with Sentir Sciences several months now and every interaction with them has been amazing! Their customer service response time is the fastest of any company that I have dealt with online. Delivery time is quick by UPS. I can’t say enough positive things about them and I make no money off of this post

Ian GPosted on Trustpilot · Aug 2026

Frequently asked questions.

No. Everything we sell is strictly for laboratory and research use. Every vial is labeled "research use only — not for human or veterinary use", and you'll be asked to agree to our research-use policy at checkout.
Every batch is sent to an independent U.S. lab before we sell a single vial of it. They measure how pure it actually is and confirm the compound is exactly what the label says. The number you see is the number they measured — we never copy figures from a supplier's paperwork.
Yes, and we'd encourage it. Every vial has a lot number printed on the label. Email that number to [email protected] and we'll send you the full report for your exact batch, charts included, within one business day.
Keep the sealed vials in the fridge and out of direct light — they'll hold up for a long time that way. Once a vial is mixed, keep it refrigerated and use it within the window your protocol calls for.
Orders placed before 2pm ET go out the same business day. Anything after that ships the next morning. Everything is packed in protective, unbranded packaging and you'll get a tracking link by email as soon as it leaves us.
We ship across the United States, and shipping is tracked on every order. You'll see the exact cost at checkout before you pay — no surprises added at the last step.
Email us with your order number and a photo and we'll make it right — a replacement or a refund, whichever you'd rather have. Every order is covered, so you're never stuck with a vial you can't use.
Yes. Orders ship in plain, unbranded packaging with nothing on the outside describing what's inside. Your billing statement simply shows our company name.
Of course. Email [email protected] with any question — about a specific compound, a lab report, or an order in progress — and a real person will get back to you, usually the same day, Monday through Friday.
Compound notes

Also referenced as: bacteriostatic water · BAC water · 0.9% benzyl alcohol solution

What Sentir H₂O is.

Sentir H₂O is sterile water carrying 0.9% benzyl alcohol — bacteriostatic water, the standard diluent for turning a lyophilized peptide into a solution a laboratory can actually work with. Every compound in our catalog ships as a dry powder; this is the other half of the preparation.

It comes in the same frosted 10 ml vial as the rest of the line, filtered and filled under sterile conditions, with each batch screened for sterility and endotoxins before release.

Why bacteriostatic.

Plain sterile water is a single-use material: once the seal is broken, nothing prevents microbial growth in the vial. The 0.9% benzyl alcohol in bacteriostatic water suppresses that growth, which is what lets one vial serve a multi-draw protocol that runs across days or weeks rather than being discarded after the first use.

That's the whole design. It isn't a buffer, it adds nothing biologically active at working concentrations, and it leaves the reconstituted peptide's chemistry alone — it just keeps the vial usable for the life of the protocol.

On the bench.

In practice, a measured volume is drawn and added slowly to the peptide vial, letting the solution form against the glass rather than jetting onto the powder — lyophilized peptides dissolve gently or not at all. The volume chosen sets the final concentration, and that arithmetic is exactly what our reconstitution calculator in the research library does.

One 10 ml vial reconstitutes many peptide vials over its life, which is why it rides along with most orders: the compound is the experiment, but this is what makes it usable.

The published record runs deeper than any product page should. For the primary literature, browse Sentir H₂O studies on PubMed. For how every batch we sell is verified, see how we test.

Sentir H₂O — common questions.

No. Sentir H₂O is supplied strictly for laboratory research. It is not for human or veterinary use, and every order requires agreement to our research-use policy.

Both start as sterile, filtered water. Bacteriostatic water adds 0.9% benzyl alcohol, which suppresses microbial growth after the vial's first puncture — so it supports multiple draws over a protocol, where plain sterile water is single-use.

That's a concentration decision, not a fixed number: the volume you add sets the mg-per-ml of the finished solution. Our reconstitution calculator in the research library does the math for any vial size and target concentration.

Each batch is filtered and filled under sterile conditions, then screened by an independent US laboratory — sterility and endotoxins below 0.5 EU/mg. The certificate of analysis is included with every order, and the report for any specific vial is available by emailing its lot number.

Sentir H₂O comes as a ready-to-use 10ml vial of sterile liquid. Quantity discounts apply automatically at checkout.

Keep sealed vials at room temperature, away from direct light. After the first draw, hold the vial at 2–8 °C and use it within the window your laboratory protocol defines.