Every peptide in our catalog is backed by a third-party Certificate of Analysis. If you’re evaluating research materials for your laboratory, the COA is the single most important document a supplier can give you — and knowing how to read one protects the integrity of your work. Here’s what each section means.

1. Identity verification

The COA should name the exact compound and its molecular characteristics. Mass spectrometry (MS) confirms the molecular weight matches the target sequence. If the observed mass deviates from the theoretical mass, the material may be degraded, truncated, or simply not what the label says.

2. Purity by HPLC

High-performance liquid chromatography separates the target compound from related impurities. The purity percentage — for our catalog, 99%+ on stocked items — reflects the proportion of the sample that is the intended peptide. Look for the chromatogram itself, not just the number: a clean single dominant peak is the signature of well-synthesized material.

3. The testing laboratory

A COA is only as credible as the lab that issued it. Independent third-party testing removes the conflict of interest inherent in self-issued certificates. Every COA in our COA Library is independently issued and searchable by product and batch.

4. Batch specificity

Purity is a property of a batch, not a product name. A supplier showing a single stock COA for all inventory isn’t showing you anything about the vial you receive. Match the batch number on your vial to the batch number on the certificate.

Why we publish everything

Our full COA library is public — no account, no purchase required. Transparency is cheap for suppliers who test and expensive for those who don’t. Browse the library and verify any product before you order.

All products sold by Avata Labs are for laboratory research use only. Not for human or veterinary use.

Bacteriostatic water is one of the most-ordered items in any peptide research catalog — and one of the most misunderstood. Here’s a practical overview for laboratory buyers.

What it is

Bacteriostatic water is sterile water containing 0.9% benzyl alcohol as a preservative. The benzyl alcohol inhibits bacterial growth in the container after first use, which is what distinguishes it from single-use sterile water for injection (SWFI). In a laboratory setting, this preservation property makes it the standard diluent for work that spans multiple sessions.

Bacteriostatic vs. sterile water

Plain sterile water contains no preservative. Once a container is opened, it has no defense against microbial contamination. Bacteriostatic water’s preservative maintains its integrity across repeated draws — the reason multi-use research workflows specify it.

Why sourcing matters

Water quality is invisible until it isn’t. Substandard or repackaged water introduces contaminants that compromise both the material and the results derived from it. We stock both 30ml laboratory-grade bacteriostatic water and Hospira-brand options, alongside 3ml formats for smaller workflows.

Storage basics

Store sealed containers at controlled room temperature away from direct light. Note the manufacturer’s beyond-use guidance once opened — preservative capacity is not indefinite.

All products sold by Avata Labs are for laboratory research use only. Not for human or veterinary use.

The research peptide market has a wide quality spread, and the cost of a bad supplier isn’t the invoice — it’s the compromised work downstream. Whether you buy from us or anyone else, these five questions separate serious suppliers from drop-shippers.

1. Can you see third-party COAs before you buy?

Not after. Not on request. Public, batch-specific certificates issued by an independent laboratory. If a supplier can’t show you the paper before the sale, assume it doesn’t exist. Ours are published here.

2. Is purity stated per batch — and is it 99%+?

A single marketing number on a homepage is not a specification. Look for batch-linked HPLC results on the certificate itself.

3. How fast does material actually ship?

Peptide research runs on schedules. We ship same-day on orders placed before 12 PM EST (Monday–Friday), from U.S. inventory — with FREE FEDEX 2 DAY SHIPPING on orders over $149.

4. Is there a real human on the other end?

U.S.-based support that answers questions about stock, batches, and documentation is the difference between a supplier and a storefront. Reach ours through the contact page — response during business hours, not business weeks.

5. Do they stand behind the catalog?

Stocked inventory, transparent stock status, published testing, and a returns policy you can read before ordering. That’s the baseline you should accept — anywhere.

All products sold by Avata Labs are for laboratory research use only. Not for human or veterinary use. Nothing on this site is medical advice.