We're almost at 3lbs MVER, so what if the rH is over 90% ?

[CC Solutions]

The HVAC does not have to be running for validity.

You cannot interpret the ASTM's as you feel they should be. The old MVER test never required grinding and never required HVAC. The new 2170 doesn't require HVAC.

If the temp is 70 and the humidity is 50, HVAC does nothing for you.