Ranked by PSR score · Nov 2026

Best Bacteriostatic Water Vendors

42 vendors we track carry Bacteriostatic Water. The 27 that pass our testing gate are ranked below by PSR score, with the certificate each one posts for Bacteriostatic Water, a price matched at 10 mL and any reader code. For laboratory research use only.

Carry it
42

Carry it

Pass testing gate
27

Pass testing gate

Lab-confirmed COAs
6

Lab-confirmed COAs

Want every carrier ordered by its Bacteriostatic Water certificate instead, with sizes and stock? See the full Bacteriostatic Water comparison. How a score is built: How we rate. How to check a certificate yourself: how to read a peptide COA.

Top 3 Bacteriostatic Water vendors by PSR score

The highest PSR scores among open stores that carry Bacteriostatic Water and pass our testing gate. Affiliate status plays no part in this list.

Affiliate links: we may earn a commission if you buy. It never changes a score or rank.

  1. #1 by PSR score

    Zeptix Labs
    8.17Strong
    Certificate
    Verified (opens in new tab)
    Lab
    Freedom Diagnostics TestingTier A
    Purity
    99.93%
    Tested
    (first seen)
    Price
    $2.00/mL ($19.99 for 10 mL)
    Shop Zeptix Labs (opens in new tab) →Zeptix Labs code details
  2. #2 by PSR score

    Amino Club
    8.08Strong
    Certificate
    Verified (opens in new tab)
    Lab
    ILS LaboratoriesTier B+
    Purity
    99.9%
    Tested
    Price
    $2.00/mL ($19.99 for 10 mL)
  3. #3 by PSR score

    Prime Peptides
    7.94Strong
    Certificate
    Verified (opens in new tab)
    Lab
    Janoshik AnalyticalTier B+
    Tested
    (first seen)
    Price
    $2.50/mL ($25.00 for 10 mL)

Best Bacteriostatic Water vendors with a reader discount

Affiliate partners that pass the testing gate and give readers a code that applies to Bacteriostatic Water, in PSR score order. This block is a convenience only: the ranking below is the same with or without it.

Affiliate links: we may earn a commission if you buy. It never changes a score or rank.

Every Bacteriostatic Water vendor that passes the gate, by PSR score

27 vendors, highest PSR score first; equal scores are listed alphabetically. Price per mL is matched at 10 mL, the size most carriers sell, so vials compare like for like. The certificate column is the vendor’s certificate for Bacteriostatic Water only. Affiliate status never affects the order (how we keep it separate).

Affiliate links: we may earn a commission if you buy. It never changes a score or rank.

Bacteriostatic Water vendors that pass the testing gate, by PSR score
#VendorPSR scoreBacteriostatic Water certificate$/mL at 10 mLReader codeLinks
1Zeptix Labs8.17StrongVerified (opens in new tab)$2.00/mLShop →
2Amino Club8.08StrongVerified (opens in new tab)$2.00/mLShop →
3Prime Peptides7.94StrongVerified (opens in new tab)$2.50/mLShop →
4Honest Peptide7.71StrongVerified (opens in new tab)$1.90/mLShop →
5S1Research7.70StrongNo lab named (opens in new tab)No price listedShop →
6Thrive Peptides7.50StrongView (opens in new tab)No 10 mLShop →
7Bluum Peptides7.48StrongVerified (opens in new tab)No price listedShop →
8Direct Peptides7.43StrongNoneNo third-party COA was publicly available at audit time$1.50/mLShop →
9KyreonStore not taking orders7.29StrongNoneNo third-party COA was publicly available at audit time$1.00/mL
10Pacific Edge Labs7.15StrongNoneNo third-party COA was publicly available at audit timeNo price listedShop →
11Paramount Peptides7.12StrongView (opens in new tab)$1.50/mLShop →
12StudzPeptides7.10StrongNoneNo third-party COA was publicly available at audit timeNo 10 mLShop →
13NovaForge Labs6.89FairNoneNo third-party COA was publicly available at audit timeNo price listedShop →
14Rogue Compounds6.86FairVerified (opens in new tab)$1.50/mLShop →
15BulkGLP6.71FairView (opens in new tab)No price listedShop →
16Peptyes6.55FairNoneNo third-party COA was publicly available at audit timeNo price listedShop →
17Hacker Peptides6.32FairNoneNo third-party COA was publicly available at audit time$0.99/mLShop →
18NextSelf Labs6.26FairNoneNo third-party COA was publicly available at audit timeNo price listedShop →
19GhostLabz6.14FairNoneNo third-party COA was publicly available at audit timeNo price listedShop →
20Research Peptides Lab6.14FairLogin-gatedCOAs are provided but sit behind the vendor's login wall$1.50/mLShop →
21Hello Stacks6.08FairNoneNo third-party COA was publicly available at audit timeNo 10 mLShop →
22Bionova Peptides6.03FairNo lab named (opens in new tab)$1.00/mLShop →
23AminoWave Labs5.85FairNoneNo third-party COA was publicly available at audit timeNo price listedShop →
24AminoVault5.78FairNo lab named (opens in new tab)No 10 mLShop →
25Peptide Pro5.62FairLogin-gatedCOAs are provided but sit behind the vendor's login wallLogin-gatedShop →
26Vortex Research5.61FairNoneNo third-party COA was publicly available at audit time$1.29/mLShop →
27Delix Labs4.52WeakNoneNo third-party COA was publicly available at audit time$2.00/mLShop →

Listed separately: 15 vendors outside the ranking

These carry Bacteriostatic Water but do not meet our testing gate, so they are never placed in the ranking above, whatever their score. The gate records what we could verify; it is not a finding of a quality or safety problem.

Show 15 vendors that fail the testing gate
Bacteriostatic Water vendors that fail the testing gate, by PSR score
#VendorPSR scoreBacteriostatic Water certificate
1Curo6.27FairView (opens in new tab)
2Amino Amigos5.62FairNoneNo third-party COA was publicly available at audit time
3Swiss Chems5.39WeakNoneNo third-party COA was publicly available at audit time
4Redline Bio Labs4.80WeakVendor report (lab not established) (opens in new tab)
5Based Research4.54WeakView (opens in new tab)
6Ageless Peptides4.36WeakNoneNo third-party COA was publicly available at audit time
7Lotus Peptide3.74PoorNoneNo third-party COA was publicly available at audit time
8Pexo Labs3.63PoorVendor report (lab not established) (opens in new tab)
9Peptide Pros3.56PoorNoneNo third-party COA was publicly available at audit time
10RapidCore Bio3.26PoorNoneNo third-party COA was publicly available at audit time
11Snowman Research3.06PoorNoneNo third-party COA was publicly available at audit time
12YourFitnessPeptides2.75PoorNoneNo third-party COA was publicly available at audit time
13Stack Research2.49PoorNoneNo third-party COA was publicly available at audit time
14Peptide Warehouse US2.46PoorNoneNo third-party COA was publicly available at audit time
15Welon Peptide Solutions2.13PoorNoneNo third-party COA was publicly available at audit time

Best Bacteriostatic Water vendors: frequently asked questions

Who is the best Bacteriostatic Water vendor?

By PSR score, Zeptix Labs is the highest-rated open store carrying Bacteriostatic Water that passes our testing gate (8.17/10, Strong). Amino Club (8.08) and Prime Peptides (7.94) follow. The certificate each of them posts for Bacteriostatic Water is shown beside the score, so a reader can check it before buying.

Where can I buy Bacteriostatic Water with a discount code?

4 affiliate partners carrying Bacteriostatic Water pass our testing gate and give readers a code that applies to it. The highest rated is Zeptix Labs (code PSR20, 20% off). We may earn a commission on those links; it never changes a score or a rank.

How are these Bacteriostatic Water vendors ranked?

By PSR score, the published vendor score out of 10, built from lab testing, certificate verification, pricing, shipping, operating history and reviews under the rules on How We Rate. Equal scores are listed alphabetically. Price per mL and the certificate for Bacteriostatic Water are shown but do not change the order, and affiliate status never does.

Why are some Bacteriostatic Water vendors listed separately?

15 vendors carrying Bacteriostatic Water do not meet our testing gate: third-party testing could not be established or independently verified. They are listed below the ranking rather than in it. The gate records what we could verify; it is not a finding of a quality or safety problem.

How do I check a Bacteriostatic Water certificate of analysis?

Open the certificate from the vendor's row, confirm it names Bacteriostatic Water and a batch, then look up the verification key on the testing laboratory's own site. 6 of the 42 Bacteriostatic Water certificates we track were confirmed at the lab. Our guide on how to read a peptide COA walks through each field. For laboratory research use only.

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