I'm guessing you meant 100mg Nic Juice. If that's the case just figure the percentage of nic juice will be the ending percentage of the mix... e.g. 12% of 100mg nic juice would make a 12% mix. Click the attachment for a table showing the percentages, mls, and drops.
View attachment 28772
I'd suggest stopping by a local pharmacy and buying some 5 or 10 ml syringes for measuring. Just ask at the pharmacy. I took in my ecig and showed them what I was using it for. Also check on the shelves for 'dosing syringes'. They're for dosing children's medicine. As you can see on the chart, counting drops can be tedious - and who knows how big a drop is anyway? If you're going to be mixing with 100mg and you think you'll stick with DIY, check the vendors like One Stop DIY that have a lot of different measures.
Good Mixing!