When isRegulated is true on an Analyte, piper automatically compares every new AnalyticalResult for that chemical against the site's assigned threshold sets and creates Exceedance records when the concentration exceeds a limit. Analytes where isRegulated is false — such as field parameters used for purge monitoring — are tracked in results but skipped during exceedance calculations, reducing noise in compliance reporting.
Technical section
Data model, API, and internals — visible to developers.