F2170 Checklist

This checklist is provided as a tool to aid in compliance with relative humidity testing per ASTM F2170. It is highly recommended that you obtain your own copy of ASTM F2170 at store.astm.org/f2170-19a.html.

1. Verify relative humidity measuring instrument conforms to section 6 of ASTM F2170.
   • Verify conformity to figure #1 and figure #2 found in Section 6 of F2170.
   • Verify NIST-traceable calibration certificate is on file.
2. Check calibration of measuring instrument per section 8 of ASTM F2170.
   • For new unused probes, proceed to next step.
   • For re-useable probes (not required for Rapid RH^®): a calibration check within 30 days before use is required. Note date on report.
3. Verify 48-hour service conditioning of concrete floor slab and the occupied air space per section 9 of ASTM F2170.
   • Concrete floor slab shall be at service temperature, and the occupied air space above the floor slab shall be at service temperature and service relative humidity for at least 48 hours.
4. Determine number and location of test holes per section 10.1 of ASTM F2170.
   • Three test holes for the first 1,000 ft² (100 m²), and at least one additional test for each additional 1,000 ft² (100 m²).
   • Record total area of concrete slab and number of test holes required on report.
5. Determine depth of test holes per section 10.2 of ASTM F2170.
   • 40% of slab thickness if slab is drying from top only.
   • 20% of slab thickness if slab is drying from top and bottom.
   • Record concrete slab thickness and depth of test holes on report.
6. Drill and prepare test holes per section 10.3 of ASTM F2170.
   • Note location of test holes on site map.
   • For Rapid RH, place the serial number decal of the sensor with the corresponding test hole on the report.
7. Verify 24-hour moisture equilibrium period for each test hole per section 10.3.4 of ASTM F2170.
8. Perform relative humidity measurements per section 10.5 of ASTM F2170.
   • Verify that meter reading does not drift more than 1% relative humidity over a 5-minute period.
   • A Rapid RH reader can be read immediately after insertion into each test hole, since the sensor has already been equilibrated for at least 24 hours.
   • Re-usable probes should equilibrate at least one (1) hour in each test hole to help ensure an accurate measurement.
9. Record and report the results per section 11 of ASTM F2170.

Wagner Meters is not responsible or liable for the actual recorded data. Because Wagner Meters has no control over the use of any probes, Wagner Meters cannot be held liable for any use of this document and shall not be liable for incidental or consequential damages. This document should be used in conjunction with the ASTM F2170 documentation; where differences are perceived, ASTM F2170 has precedence.