Tiny Compounds.
Massive Consequences.
Reference standards with the accuracy, consistency, and traceability laboratories expect from a trusted analytical partner.
Your Data Is Only As Good As the Standard Behind It.
Since 1990, Restek has built its reputation one accurate standard at a time—manufactured in our own ISO-accredited labs in Bellefonte, Pennsylvania, for environmental, food, and cannabis applications. We’re also the only reference standards supplier that manufactures the GC and LC columns those standards are run on: a fully integrated analytical ecosystem, not simply a source of ampuls. As an independent, 100% employee-owned company, every employee-owner has a direct stake in getting your standard right.
What Are You Testing For?
Every application comes with its own compounds, methods, and regulations. Choose yours below to find certified reference materials built to match.
Cannabis/Hemp
Potency · Strain ID (Terpenes) · Mycotoxins · Residual Solvents · Pesticides
Need Standards for PFAS?
Restek’s PFAS standards are manufactured in our dedicated PFAS facility, with expanded data packs that report trace impurities, so off-target analytes don’t affect your analysis.
Procurement, Simplified
We maintain 1200+ standards in active stock, spanning concentration ranges from 0.001 ng/mL to 100,000 µg/mL, ready to ship. Know your part number? Search restek.com/standards directly. Need help finding it? Our free Reference Standards Finder does the matching for you.
If we don’t have a stock product that meets your needs, our formulations chemists will work with you to develop a custom solution—reviewed for feasibility and chemical compatibility before we commit to producing it.
A standing (or “blanket”) order lets you draw down a custom standard’s batch volume over time instead of paying for it again with every small order—fewer batches, less lot-to-lot variability, and invoicing only when product ships.
Find Your Standard. Model Your Method.
Reference standards are only as useful as the ecosystem around them. These free tools help you validate your workflow before you ever open the ampul.
Find Your Standard
Enter a compound or paste a full list of what you’re analyzing. The Reference Standards Finder matches you to the right standard in minutes.
Model Your Method
Four free tools model your separation before you touch an instrument: Pro EZGC and Pro EZLC Chromatogram Modelers, plus method translators for both.
Find your Standard
Model Your Method
What Customers Are Saying
What Makes Restek Reference Standards Different?
Manufactured for Consistency
Barcoded raw materials, automated production, and our proprietary glassware and ampule deactivation process eliminate manual error at every step, so every standard performs the same way, batch after batch.
Second-Source Ready
Restek can serve as both your primary and secondary source, preparing two independently produced lots using two technicians and two different NIST-traceable balances.
Backed by ISO Accreditation
ISO 17034 and ISO/IEC 17025 accreditation (A2LA) confirm every standard is made and tested to world-class requirements, with at least 95% of our products providing a 12-month shelf life or longer—with three CofA tiers and QR-code documentation access on every ampul.
Get More from Every Standard
Our resource library covers everything from how-to guides to articles and videos.
Frequently Asked Questions
Need Help with Reference Standards?
From method selection to product recommendations, our reference standards experts are here to help you navigate complex workflows and achieve accurate, reliable results.
