@Steve.
to break it down from another noob mixer who has not used the darkstar shots yet.
bottle shots are large bottles usually 250ml/500ml which has enough of the ready mixed concentrate to make a full bottle after adding vg/pg/nic no tools required.
one shots on the other hand are slightly different.
they are full of concentrate and to make a 250ml bottle you will need the steam or any other calculator like mentioned above.
personally this is where a cheap set of scales come in handy or syringes.
using the calculator you put in the size of mix you want to make. then where it says flavour you add the % of the concentrate you have as it should say on the bottle like 15-25% lets use 20%
next box the nic and change to if its 100VG or 50/50 etc next box the vg/pg ratio you want to end up with and your final nic strength
so for example we are using 100VG 1.8mg nic shots and you want a final strength of 3mg
then on the right it will show numbers in grams.
to make 250ml you will not have enough concentrate as in picture you need 50ml if using a syringe or 52.43 grams
so to work out how much you can make you need to lower your 250ml size and watch the number next to flavour on the right. when it hits 30ml bottle shot size your size mix will be worked out.
so to use the 30ml shot you can only make 143ml final mix as you have used up all of your concentrate with scales 29.99ml or syringes 28.60ml
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