Instrument humidifier test
A recent thread on instruments in low humidity regions prompted me to run a short test. I will do some further tests over the next week or two. We live in a very low humidity, very hot, environment - bordering on Europe's only 'true' desert, in fact where the Clint Eastwood "Fist Full of Dollars" movies were all filmed.
Yesterday, at noon, this is what it was like out there:
Humidity under 10%, and air temperature 34.2 Celsius, 94 Fahrenheit. It gets considerably worse than this in July and August...
Inside, I placed a mandolin in its case in a room with no AC running. These were the conditions:
RH 17.8% and temperature 26.7 Celsius, 80 Fahrenheit.
I have been using the DAMPIT humidifiers for quite some time, but had no real data on how well they worked. I normally use a Viola model for my mandolins. I added a Dampit here, and also included a miniature temperature and humidity data logger, set to record every 60 seconds, positioned inside the instrument under the opposite 'F' hole from the Dampit.
The blue line is temperature.
The red line RH.
The green line is the dew point.
The results seem to show that the Dampit works pretty well, keeping the humidity well within 40-50%, averaging around 45%, despite external humidity dropping below 18%.
I used a fibreglass case here, with quite an effective rubber seal. I will repeat this test with a wooden case to see what effect that has. I'm also going to try a different case humidifier...
Gibson F5 'Harvey' Fern, Gibson F5 'Derrington' Fern
Distressed Silverangel F 'Esmerelda' aka 'Maxx'
Northfield Big Mon #127
Ellis F5 Special #288
'39 & '45 D-18's, 1950 D-28.