..the potency of yr e-liquid is mg to 1ml of e-liquid..so if yr 100mg/100ml is only 1mg of nicotine strength ..which is very safe to use,almost 0 nicotine...but if it is 100mg/1 ml than this is extremely poisonous and should not be handle..please dont play with 100% nicotine(100mg/1 ml),extremely dangerous,poisonous and definite cannot be handle by layman(DIYer)..only for expert(chemist & professional qualified personnel)..regards mafig ps Nicotine base liquid has a very strong odour and must be kept in airtight glass bottle and out of reach of kidshe told me it was 100mg/100ml



) like red bull,cola,rootbeer,espresso...try to mix in 5-10% of the flavorings 1st,test it. I am using an evic & purposely bought a dripper tank IGO-L for my DIY.saved me a lot of trial & error with it & I love this atomizer!
u may also try to sniff the inner cap before mixing,if its quite dominant(you'll notice the strong aroma once you uncap the flavoring) then start at a lower mix percentage.