Mold and Mildew Test - Day 1

I opened the cooler and inserted a hygrometer. A slight odor of the white vinegar was noticeable. About an hour later the relative humidity is around 92%. This is likely the result of 7 filaments being in use at the same time, the cooler volume being smaller and its seal being better than in a Musik Tent enclosure. This elevated humidity should accelerate the testing.  Checked a few hours later and hygrometer was up to 97% RH.  Later in day, the  inside of the cooler has climbed to 99% RH.