Certifications, Equipment & Calibration

Professional radon measurement depends on more than a device. Credentials, device approval, calibration, performance testing, QA/QC and recordkeeping all matter.

Professional credentials

Iowa-regulated measurement.

RadonStead performs compensated radon measurement only while the required Iowa measurement certification is active. The operating plan also includes national professional credentialing through NRPP.

Iowa Radon Measurement Specialist certification
NRPP Measurement Professional / Analytical pathway
Required continuing education
Timely Iowa test-data reporting
Five-year testing record retention

Primary measurement equipment

Professional continuous radon monitors.

The launch equipment plan uses two Airthings Corentium Pro CRMs, with additional monitors added only as utilization supports them.

Approved professional CRM model verified before purchase/use
Annual proof of calibration for the Corentium Pro under current NRPP device listing
Device performance testing at the listed interval
Security cables, tamper seals, stands and cases
Redundant monitor capacity to reduce downtime risk

QA/QC

Every result should be traceable.

RadonStead's internal workflow ties each test to the customer, property, device, placement time, retrieval time, conditions, notes and report.

Device ID

Every test is associated with the exact monitor used.

Calibration

Calibration documentation is retained and monitored by due date.

Performance

Performance testing is scheduled before the approved-device interval expires.

Interference review

CRM data and site notes are reviewed for conditions that may affect validity.

Credential transparency: Active credential numbers and device details should appear on production customer reports and can be verified through the Iowa HHS specialist lists. This website does not display a credential number until one has actually been issued.