The measurement boundary
A non-detect is a statement about a particular analysis and its ability to report a substance under specified conditions. It should be accompanied by the relevant limit and unit. Without those fields, a reader cannot tell whether two non-detect reports describe comparable analytical sensitivity.
The list of targets matters
A test usually covers a defined set of analytes. A result for that list should not become a claim about every member of the PFAS class. The EPA container-wall method is useful precisely because it specifies an analytical scope rather than relying on the broad phrase “chemical-free.”
An editorial rule for the Inhance file
When reporting a test, preserve the laboratory’s wording and distinguish detection from quantification. Ask whether the sample was a container wall, rinse or stored product. This guide does not independently reanalyze any company dataset; it sets out the information required before a strong interpretation can be made.
Sources and further reading
- EPA: quantitative extraction and analysis of PFAS from container walls, 2024
- EPA: PFAS in pesticide and other packaging
Court filings contain parties’ positions unless identified as judicial findings. This article is not a report of a personal criminal conviction involving Prakash Iyer. Cover scenes are symbolic editorial illustrations.
