QA, It comes with 2 extra membrane replacements and a fairly large bottle of electrolyte. I am still using the original membrane, but I did have to recently refill it with the electrolyte. I still have plenty. As for the salinity adjustment, I don't ever remember reading about that or seeing any documentation about it. Maybe another model possibly? Mine has a self calibration mode that I usually run if its been more than a week or two since I have used it. It always comes back with 20.8-20.9 O2 in the air so it seems to be consistently accurate in that regard, anyway.
Last edited by JKS3613; 07/08/19 02:28 PM.
