;D ;D ;D
I have no idea what kinda ratio - with this ink or the other dyes 
trial and error . It never takes much
This one is that little bottle 1/2 full with Future and probably 25 drops of ink - about . :
???
that little bottle of ink will last forever ;D
One thing that I've found by continuously working with this stuff is that you need to let it cure for at least 4 or more hours for airbrush coats or much longer for heavy , brush application orr you'll get into trouble 
( the bottle tells you 8 hours for re-coat on floors )
You can get away with 2 or 3 coats in short succession ( 20 min interval ) but when it seems dry , there is still a significant amount of solvent present ( glycol ether ) after the water evaporates and the subsequent layer will put the prior one(s) back into solution . ... this can be problematic ;D
The effect is cumulative , so more coats mean way more dry-time .
it's better to wait more than an hour between layers - and even then , you might need to stop for 8-12 hours if the solvent level starts to creep up .. .. it does not behave like regular acrylic paint . It has a whole mess of additives - all to help it do the floor job of course ( no artists in mind ) :
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WHAT ?! No proto-matter ?!
Good Grief ! No wonder it's so clear :
There were some really wicked cool metallics in that ink brand ;
Copper-coated gold , chrome , nickel , copper .... ;D
Let me know what you get
Cheers ,
Uru