Zero percent humidity

[Chris Gregg]

I have a fairly accurate hygrometer.  I bought it from a scientific 
instrument supply company.  I have been using it for the past year and have 
been delighted with the performance. A description of it can be seen at 
http://www.hannacan.com/fiches_techniques/HI98601.pdf
Up here in the far North we have just been going through a cold spell  with 
an mass of Arctic air over us.  I knew it was dry in some homes, have had 
the humidity down to 5 to 8% at times, however this is nothing compared to 
some public buildings that have music schools in them.  I was in one 
yesterday that recorded 2.7 percent in one room and this evening I was in a 
building that actually took the gauge down to 0% for a few moments.  I did 
not know this was possible, however I guess it is.  It must be like sitting 
right inside the furnace.  Some of the local piano salesmen tell me they 
sometimes hear things go crack on the showroom floor.  I wonder why?  We 
even have laminated boards that crack in this part of the world.  Keeps us 
busy though.  Install lots of Dampp Chasers around this time of year.

Chris