Ok so we are defiantly not trying to fine tune a piano... But im doing the best i can. Steroid calculator has ruin me. however this is how figure it.. I just use the same value od displacement for albuterol as b12 if its off a little it will be ok. I am going to do the best I can do not the best YOU can do!

420ml WETF(What Ever The Fuck)
L-Carn 600mg/ml b-12 2mg/ml albuterol 2mg/ml
L-car i added 5 % to at the start to rate purity at 95%
420ml x 630mg =264600mg
264600 /1000= 264.6 grams
264.6 x 0.75= 198.45ml displacement
B-12 added 10% at start to rate at 90% purity
420ml x 2.2mg=924mg
924mg/1000= .924 grams
.924g x 0.74 = .648ml displacement
Albuterol added 15% to start to rate purity at 85%
420ml x 2.3 = 966mg
966mg/1000= .966g
.966g x0.74 =0.715ml
0.715ml +0.648ml +198.45ml= 199.813 we gonna call that an even 200ml and keep it simple.
200ml will be what we subtract from the ml total to account for powder displacement.
420 - 200= 220ml bac water
the only thing i have not been able to figure in the process is if i need to add acid at the end to get the ph level just right. shooting for between 7-8 i believe.. I will probly try and get this close when i make the bac from the beginning.
BAC water 1.5% ba
probly make 600ml just to have plenty
1.5% of ml600 = 9ml BA
600ml-9ml= 591ml distilled water
i need
264.6grams L- carn
.924grams B-12
.966grams albuterol
220lm BAC water
I will probly dissolve the latter 2 of the compound's first then start adding the L-car put a smiggin of heat to it mix it like hell and see what happens.. The only wild card is the amount of acid to put in to get the PH right.. but it will be ok as like i said .WE ARE NOT FINE TUNNING A PIANO!! I am waiting on the mail to run for my ph strips and acid!
Peace
D