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Top 5 Positive Customer Reviews for cy 12c
Its working well. I'v made FEW mesurments of oxygen 100% nitrox 50% and normal breathing gas air from diving bottles. First of all well calibrate befor mesurments. My score oxygen 100 shows 101% other oxygen sensor 99-98 Nitrox 50 after filling shows 51% other sensor shows 51.4% Normal breathing gas first measure not well calibrate 23% for this price it is worth to buy for checking YOUR breathing mixture befor diving.