A catalytic converter assay measures the precious-metal content of a prepared sample. It helps explain the material being evaluated in a recycling transaction. Representative sampling, clear reporting, and an understood settlement process are all important to interpreting the result.
Updated October 22, 2026.
What does an assay measure?
Catalytic converter recycling commonly involves platinum, palladium, and rhodium, collectively known as platinum group metals or PGMs. Laboratory analysis measures the metal content of the sample presented for testing.
The result should be read with its stated units and material reference. A measured concentration is not the same thing as the final payment for a lot. The transaction also depends on the material quantity and the agreed purchasing terms.
Why does sampling matter?
The laboratory analyzes a sample. Ask how that sample was prepared, which lot it represents, and how it is connected to the material records. The sampling process is part of the basis for understanding the report.
For general industry context, BASF ECMS describes sampling and assaying in its automotive catalyst recycling services. Specific preparation and analysis procedures should be explained by the team handling your material.
How does the result connect to purchasing?
In an assay-based discussion, ask how the measured metal content is used alongside the agreed pricing and settlement terms. Confirm the material basis, price reference, applicable charges or deductions, and reporting and payment arrangements.
There is no single payment timetable or set of terms that should be assumed from a general description of assay. Confirm those details for the specific transaction.
Does every converter sale require an assay?
No single purchasing route should be assumed for every inventory. Maxcore describes per-can, code-based, and assay purchasing options. Discuss the material you have and ask which approach is appropriate.
Our comparison of assay and per-piece purchasing outlines questions to ask when considering the options.
What should I ask about an assay process?
- How is the material lot identified?
- How is the sample prepared and recorded?
- Which metals and units are reported?
- How do the results connect to the agreed settlement?
- What is the process for raising a question about the report?
For a checklist to use when results arrive, read how to read a catalytic converter assay report.
Ask Maxcore about your converter material
Explore Maxcore's catalytic converter services, request information, or call 314-725-2673. Confirm the purchasing method, preparation process, and terms directly with the team.