I let it sit quite a while prior to use. I filled three new devices with three new juices. Nice pear went in a carto tank. My first carto tank and my first bottle of nice pear. Both are fantastic. Gandalf went in a CE3 and shadow in the T2. I filled all the devices and left for the store. I didn't try any of the juice until I returned home about 30 min later.
I looked closely at the T2 for signs of moisture (primer) before filling and didn't see any. It's possible I missed if of course.