I'm new to DIY and so far have invested in a set of funnels, and a set of lab-quality graduated cylinders, with the smallest one being 5 ml and accurate to 1/10th of a ml. Being an engineer by trade, and wanting to avoid the fussiness of syringes and the fact that they are sold as "single use" only, I came up with an alternate method using the concept of serial dilution that seems to make sense and avoids syringes. Here are the results of my first batch:
1. Starting with a 150 ml bottle of 100mg/ml nicotine juice, divide it into five 30 ml bottles. Since these 30 ml bottles actually hold 37 ml, I added 7 ml of pg to top them off and eliminate the air space. This dilutes the liquid down to 81.1 mg/ml. Four of them go into the freezer.
2. Pour the 37 ml of concentrate into a 32 ounce mixing bottle, add 145 ml of PG, and add 185 ml of VG. This yields 367 ml of juice at 8.2 mg/ml, 54/46 VG/PG, which fills three 120 ml bottles to 122.3 ml. Two of them go into the freezer.
3. This bottle is then used to make four 31 ml batches for flavor experimentation. I figured that if a batch turned out terrible, it would only waste a small amount. I put 23 ml of the 8.2 liquid into a 30 ml bottle, added 4 ml of flavorings, and another 4 ml of VG to make the numbers work out, and get 31 ml at 6.1mg/ml with a 12.9% flavor content (by volume) and 53/47 VG/PG.
I'll be able to make 3 more batches by just repeating step 3, and then repeat steps 2 & 3.
The numbers can be adjusted for larger bottles of nicotine or to get different results. The idea of serial dilution is a well known laboratory technique.
I may need to refine the procedure to account for the flavor liquids. I assumed that they use 100% PG, and I'm not sure if the flavoring should be considered to be 100%. That's a relatively small matter that can be tweaked with experimentation.
Apologies if this has already been posted. There's a lot of threads here!
Thoughts, anyone?
1. Starting with a 150 ml bottle of 100mg/ml nicotine juice, divide it into five 30 ml bottles. Since these 30 ml bottles actually hold 37 ml, I added 7 ml of pg to top them off and eliminate the air space. This dilutes the liquid down to 81.1 mg/ml. Four of them go into the freezer.
2. Pour the 37 ml of concentrate into a 32 ounce mixing bottle, add 145 ml of PG, and add 185 ml of VG. This yields 367 ml of juice at 8.2 mg/ml, 54/46 VG/PG, which fills three 120 ml bottles to 122.3 ml. Two of them go into the freezer.
3. This bottle is then used to make four 31 ml batches for flavor experimentation. I figured that if a batch turned out terrible, it would only waste a small amount. I put 23 ml of the 8.2 liquid into a 30 ml bottle, added 4 ml of flavorings, and another 4 ml of VG to make the numbers work out, and get 31 ml at 6.1mg/ml with a 12.9% flavor content (by volume) and 53/47 VG/PG.
I'll be able to make 3 more batches by just repeating step 3, and then repeat steps 2 & 3.
The numbers can be adjusted for larger bottles of nicotine or to get different results. The idea of serial dilution is a well known laboratory technique.
I may need to refine the procedure to account for the flavor liquids. I assumed that they use 100% PG, and I'm not sure if the flavoring should be considered to be 100%. That's a relatively small matter that can be tweaked with experimentation.
Apologies if this has already been posted. There's a lot of threads here!
Thoughts, anyone?
