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https://www.wagnermeters.com/concrete-moisture-test/concrete-info/24-hours-rh-testing/
Aug 07, 2015 · While the RH test results can now be obtained in just 24 hours, the CaCl test under the ASTM F1869 standard still requires a full 72-hour wait period. CaCl testing also requires that the floor is cleaned, scraped and ground to make a clean surface that will test equally from site to site.Estimated Reading Time: 5 mins
https://www.wagnermeters.com/concrete-moisture-test/concrete-info/10-guidelines-for-astm-f2170-compliance/
Jun 02, 2013 · Equilibrate sensors for 72 hours 24 hours before initial reading. ASTM F2170 requires each sensor to equilibrate at least 72 hours now only 24 hours before a documentable reading is recorded. As a practical matter (not a compliance matter), the Rapid RH® has been shown to provide readings within 3% of the final RH value within 1 hour of sensor insertion.Estimated Reading Time: 6 mins
https://www.chamberofcommerce.com/united-states/north-dakota/grand-forks/personnel-consultants-and-services/2005378854-rh-standard
RH Standard is located at 8 S 3rd St, Grand Forks, ND 58201. RH Standard can be contacted at (701) 757-4220. Get RH Standard reviews, ratings, business hours, phone numbers, and directions.
https://www.concreteconstruction.net/how-to/construction/testing-slab-relative-humidity_o
Oct 11, 2017 · They tested RH probes from six manufacturers, and took temperature and RH readings at 1, 2, and 4 hours, as well as 24, 48, and 72 hours. The study showed that RH measurements taken at 24 hours – a full 48 hours ahead of the required 72-hour mark – are essentially the same as the 72-hour readings.
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