Roger; I really cannot answer Roger's question. however when I ran a platinum arc electrode (a Bosh platinum spark plug $2.50 with the ground lug removed) without the CO2 gas I had high NO3 as expected and the ppm was about 60-75 % of what I normally would have received for the length of run time.
> Ole Bob: Are you saying that 75% of the CS comes from the wet electrode? What > is the proportion from your normal setup? Roger > Since it had high NO3 I threw it away, so I guess that I need to repeat it with CO2 bas blanket to a definitive answer. That is the second item that I owe the list. The first is the promised gold colloid. I gat get a TEM made for that but I do not have a soucre for the AA to measure ppm. Can anyone help with this? "Ole Bob"

