I just finished testing my first batch of 16 FlavourArt flavors and I thought I'd share the results. All flavors were tested in a blend of 70/30 PG/VG, no nic. I used a glass dropper to dispense the flavors into my mix (not the supplied rubber tip on the flavor bottles) for better accuracy. Prior tests revealed my glass dropper uses 25 drops to make 1 ML. I steeped my test bottles for 1 week. At percentages higher than I list below I started to get flavor drop off. Hope this helps.
Black Cherry 6%
BlackFire 2%
Breadcrust 2%
Cappuccino 2%
Carmel 2%
Catalan Cream 2%
Cocoa 4%
Dark Vapure 4%
Desert Ship 2%
Fresh Fig 2%
Fresh Cream 2%
Hazelnut 2%
Oryental4 2%
RY4 4%
Shade 2%
Vanilla 6%
Black Cherry 6%
BlackFire 2%
Breadcrust 2%
Cappuccino 2%
Carmel 2%
Catalan Cream 2%
Cocoa 4%
Dark Vapure 4%
Desert Ship 2%
Fresh Fig 2%
Fresh Cream 2%
Hazelnut 2%
Oryental4 2%
RY4 4%
Shade 2%
Vanilla 6%