Checklist
7 Things to Check Before Choosing a Laboratory Research Supplier
Any supplier can say “high purity.” The ones worth working with can show you the paperwork. Here is what to look for, in plain language.
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Testing by an independent, named laboratory
In-house testing is a starting point, not proof. A third-party laboratory has no stake in the result. The report should name the laboratory that ran the analysis.
Ask: Which laboratory performed the testing, and is it independent of the seller?
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A certificate for the exact lot you receive
A generic certificate that is reused across batches tells you little. Each lot should have its own report, and the lot number on the report should match the lot number on the label.
Ask: Can I see the certificate for this specific lot number before I order?
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The analytical methods are listed
A useful report names how each result was measured. Common methods include HPLC for purity, mass spectrometry for identity, and endotoxin screening. A single percentage with no method attached is a weak record.
Ask: Which methods were used, and are the results shown on the report itself?
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Documents you can verify
A report should carry identifiers such as a sample or report number and the testing date, so it can be confirmed with the issuing laboratory. If a document cannot be traced back to its source, treat it with caution.
Ask: Does the report include a sample ID and date I could confirm with the lab?
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Clear research-use-only labeling
Legitimate research suppliers label materials for laboratory research use only and keep their language factual. Claims about personal use or outcomes are a sign the supplier is not operating as a research supplier.
Ask: Are the labels, product pages, and terms consistent about research use only?
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Careful packaging and handling
Lyophilized (freeze-dried) materials are sensitive to heat, light, and moisture. Look for sealed vials, protective packaging, labeled lot numbers, and clear storage guidance.
Ask: How are orders packaged, and what storage information comes with them?
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A transparent business behind the catalog
A real mailing address, a way to reach a person, written policies, and a standard card checkout are basic signs of an accountable business. Anonymous storefronts that only take irreversible payment methods are harder to hold to their claims.
Ask: Is there a business address, a contact channel, and a written returns policy?
Quick red flags
- One certificate used for every batch, or no lot numbers at all
- Reports with no laboratory name, method, sample ID, or date
- Health or personal-use claims on a “research” site
- No business address or contact information
How Delta Peps handles this checklist
We built our catalog around documentation first:
- Independent testing through Freedom Diagnostics
- A published certificate for each lot, matched by lot number
- HPLC purity results, with mass spectrometry and endotoxin information where published
- Research-use-only labeling across the site and on every vial
- A U.S. mailing address and standard card checkout
You can browse every published lot record before you look at anything else.
Review the laboratory records Visit deltapeps.comAll materials sold by Delta Peps are for laboratory research use only. They are not drugs, foods, supplements, or cosmetics, and are not for human or veterinary use. Nothing on this page is medical advice. Purchasers must be 21 or older.