adamh, here is an idea for you: if you want to get scientific, you may be able to actually measure the ppm concentration of H2 in your blood and body resulting from breathing H2.
The idea involves using the H2Blue drops (which cost $30 a bottle) to measure the ppm concentration of H2 in your saliva, some time after (say 30 minutes after) you breath in some H2 gas into your lungs in your usual way. The saliva ppm levels I am guessing should be a reflection of the general ppm level in your body and blood resulting from breathing in the H2.
The H2Blue drops can measure ppm levels down to an accuracy of 0.1 ppm, because each drop in the bottle represents 0.1 ppm of dissolved H2 gas. Basically, to use H2Blue, you add these drops, one by one, to a 6 ml sample of your solution to be tested (saliva in this case), counting the drops as you go. The 6 ml of solution of H2 will neutralize the blue color of the drops to begin with, but at a certain point, the color of the drops will stop being neutralized, and at this point, the number of drops that you have placed in the solution gives you the ppm of the solution. So for example, if the blue color of the drops stops being neutralized after 12 drops, then the H2 concentration of the solution being tested is 1.2 ppm.
Streamlover shows how to use the H2Blue drops in his video at timecode 12.50.
So, what you can do is perform your usual H2 breathing (taking your usual gulp of H2 gas into your lungs), and then after giving some time for the H2 gas to distribute around your body (I would wait say 30 minutes), then take an exact 6 ml sample of your saliva, and add the H2Blue drops to it, to measure the H2 concentration in the saliva.
In fact, because I calculated the concentration in the body (and thus the saliva) to be around 0.03 ppm after breathing a lungful H2 gas, that's actually too small to measure using the H2Blue drops (which can only measure down to 0.1 ppm), so what you can do is increase your body ppm levels by a factor of 10, by taking 10 of your usual gulps of H2 gas (over a period of several minutes), and then after waiting 30 minutes, measure your saliva ppm. By my calculation, the saliva ppm will then be around 0.3 ppm mark, which would correspond to 3 drops of H2Blue.
So then you just divide your saliva ppm results by 10 to get the body and blood ppm achieved from one of your usual gulps of H2 gas.
(If breathing in 10 of your usual gulps of H2 gas still does not produce a saliva ppm high enough to be measured, then you may have to increase your intake to say 30 gulps of H2 gas or more, and then measure the saliva ppm, and then divide your results by 30).
Edited by Hip, 21 May 2017 - 06:27 PM.