Great report and thank you for providing these results. My results were a bit different although not as in depth as yours. I used a combination saline/bakingsoda solution at 3.6% (1.8 saline/1.8% baking soda). I've settled on adding 3% of this solution in my final mix. I used a kayfun with a chocolate and an arabic mix and a T3 with an elder captain mix all in a 65vg/35pg/14mg base. It did seem to very slightly mute taste of the flavor but not drastically but at the same time smoothed out the harsh edge of the vape. The vapor cloud was increased and wicking was consistant. I've only been testing the mixes for about 12 hours now but have not seen any negative effect on the coils or vapor output and as of yet have not needed to adjust voltage. For me the slight mute in flavor was a decent trade off for the throat irritation relief. Increasing the flavor by 1 - 2 percent would compensate for this flavor loss but for me I don't think it's that far off where I would do this. As my purpose was for throat irritation relief and not fizz reproduction I have no comments on that subject.
I'm confused about the percentages. It seems you had a powder that was 50/50 saline, baking soda -- and you mixed it with what (water ?) to create a 3.6% solution??? And then used that at 3% in your blend.
If that's correct (that you made a 3.6% solution), what inspired that percentage?
Fwiw (for the sake of the thread) we didn't test ours for several days after we mixed them - and that was after 2 hours of ultrasonic/heat, and "caps off" for several hours. Not saying we know that's essential - just saying "ymmv" (possibly) with/with the steeping & airing...but you know all about the steeping/airing thing.