i hold the dropper almost verticle and get about 30mg per drop. the total iodine in that is less, more like about 23mg of total iodine.
you can use the oral syringe i sent to measure how many drops it takes to equal one milliliter. that is one gram of KI. divide 1000 by the number of drops it took to equal a ml and there is your own personal number of mgs/drop, no matter how you hold the dropper. just be consistent.