Accurate PGM Analysis for All Catalyst Materials
Whatever your catalyst material is spent automotive, spent industrial, reforming, fresh, EO, or VAM, our ISO 17025-accredited methods deliver accurate, precise assay results that illustrate the quality of your material in a timely manner.
ISO 17025
accredited (ISO/IEC 17025:2017)
ISO 9001:2015
certified sampling & analysis
IPMI · LBMA · LPPM
industry memberships
Commercial-Grade
assays, prompt turnaround
ACCURATE CATALYST ANALYSIS
Whatever your catalyst material is – Spent Automotive, Spent Industrial, Reforming, Fresh, EO or VAM Catalyst – our ISO 17025 accredited testing methods will provide you with accurate and precise assay results. Our commercial-grade assays will illustrate the quality of material in a timely manner.
Spent Automotive Catalyst
As a catalyst recycler, getting the greatest value for your investment is key. Whether you present us with monolith, diesel, or wash coat spent catalysts, we can provide top-quality analysis within a prompt turnaround time. Our commercial grade assay will tell you the exact amounts of palladium, platinum, and rhodium contained in your investment materials.
Spent, Reforming and VAM Catalysts
These spent catalysts from the oil refining and petrochemical industries are potentially full of precious metals. As such, they can have a valuable second life. We will assay your spent catalysts to determine the trace amounts of gold, silver, platinum, palladium, or rhenium they might contain. Our testing methods are accurate, reliable, and environmentally sound.
Fresh Catalyst
As a catalyst manufacturer, it is essential to determine if your fresh catalyst materials meet strict specifications in order for the catalyst to perform as intended. We will test your material under strict guidelines and our assays will illustrate the quality of PGMs within your materials.
Silver-Based Ethylene Oxide (EO) Catalyst
Ethylene oxide is used to produce a wide variety of consumer products. As a catalyst in EO production, silver is ever-present. Ledoux & Company can accurately test for soluble silver, insoluble silver, and total silver using industry standard methods.
FEATURED SERVICE
Spent Automotive Catalyst Testing
As a catalyst recycler, getting the greatest value for your investment is everything. Whether you bring us monolith, diesel, or wash-coat spent catalysts, we deliver top-quality analysis on a prompt turnaround. Our commercial-grade assay tells you the exact amounts of palladium, platinum, and rhodium contained in your investment material.
What We Measure
Exact palladium (Pd), platinum (Pt), and rhodium (Rh) content, the precious metals that determine your material’s recovery value.
Material Forms
Monolith, diesel, and wash-coat spent catalysts, analyzed with the accredited method best suited to each form.
Why It Matters
An independent, defensible assay protects your margin in recycling and refining settlements, accuracy is the difference between fair value and lost value.
Spent, Reforming & VAM Catalysts
Spent catalysts from the oil refining and petrochemical industries can hold a valuable second life. We assay for the trace gold, silver, platinum, palladium, or rhenium they may contain, using methods that are accurate, reliable, and environmentally sound.
Fresh Catalyst
As a manufacturer, fresh catalyst must meet strict specifications to perform as intended. We test your material under strict guidelines, and our assays illustrate the quality of the PGMs within it.
Silver-Based Ethylene Oxide (EO) Catalyst
Silver is ever-present as the catalyst in ethylene oxide production. Ledoux & Company accurately tests for soluble silver, insoluble silver, and total silver using industry-standard methods.
Don't See Your Catalyst?
If it carries platinum-group or precious metals, we likely test it. Tell us your material and goal, and we’ll recommend the right approach.
Why Recyclers, Refiners & Manufacturers Trust Ledoux
Truly Independent
We test, we don’t trade or refine. Our only stake in your result is its accuracy, which is what makes our assays defensible in settlements and disputes.
Accredited & Proven
ISO/IEC 17025:2017-accredited methods and ISO 9001:2015 certification for sampling, inspection, and analysis of catalysts and precious-metal-bearing materials.
The Right Method
We match the technique to your catalyst material instead of forcing everything through one instrument — for results you can rely on.
From Sample to Certified Result in 4 Simple Steps
1.Request a quote or consult
Tell us your material and goal. We recommend the right method and confirm pricing and turnaround.
2. Submit your sample
Follow our guided process: handling, packaging, and chain-of-custody.
3. We analyze
Tested using the accredited method best suited to your material.
4. Certified report
Clear, defensible results for settlement, valuation, or verification.
Frequently Asked Questions (FAQ)
What types of catalyst materials do you test?
A wide range — spent automotive catalysts (monolith, diesel, or wash coat), spent industrial / refining / VAM catalysts, fresh catalysts, and silver-based ethylene oxide (EO) catalysts.
What analyses does Ledoux perform on catalysts?
Our ISO 17025-accredited lab runs precise assays for precious-metal and chemical content — for example palladium, platinum, and rhodium in automotive catalysts; gold, silver, platinum, palladium, or rhenium in industrial catalysts; and soluble, insoluble, and total silver in EO catalysts.
Why test my catalyst instead of reusing or selling it untested?
Testing reveals the exact precious-metal content or chemical composition — essential for valuing spent catalysts for recycling and refining, verifying fresh-catalyst purity and performance, meeting specifications and regulations, and optimizing recovery.
Is Ledoux & Company an accredited lab?
Yes. We are accredited under ISO/IEC 17025:2017 for catalyst PGM determinations and related analyses, and hold ISO 9001:2015 certification for the sampling, inspection, and analysis of ores, concentrates, catalysts, and precious-metal-bearing materials.
Which industries and applications do you cover?
Catalysts used in automotive exhaust systems, chemical manufacturing, petrochemical refining, industrial processes, and ethylene oxide production — both fresh catalysts before deployment and spent catalysts after use.
SEASONAL — SORRENTO 2026
Heading to the LBMA/LPPM Global Precious Metals Conference in Sorrento?
We’ll be following the conversations shaping the market this October. If you’re rethinking your assay or verification partner, let’s talk before Sorrento — book a no-obligation consultation and we’ll be ready to move when you are.
Conference runs 4–6 October 2026, Hilton Sorrento Palace.
Results the World Has Trusted
Since the 1880s, the most important materials have passed through our lab. A few we’re proud of:
- Statue of Liberty & Chrysler Building. Analyzed the copper used on the Statue of Liberty and the metals atop the Chrysler Building (and, it’s rumored, the cables of the Brooklyn Bridge).
- The 1969 moon landing. Entrusted with moon rocks and lunar vehicle metal.
- The Manhattan Project. Monitored the Hudson River for radioactive elements.
- The Atocha. Authenticated coins from a Spanish galleon sunk off Florida in the 1600s, and verified pre-Columbian artifacts.
- Harper’s, 1896. Certified that Rae’s Olive Oil was unadulterated.
The same rigor we brought to those materials, we bring to yours.
Know Exactly What Your Metal Is Worth
Accredited, independent results — backed by 140 years of trust. Tell us what you need and we’ll recommend the right approach.
Questions first? Talk to an expert.