XNX Replacement Sensor Cartridge-Sulfur dioxide (SO2) 0-15.0 ppm (5.0 to 20.0 ppm, 5 ppm); 0-50.0 ppm (20.0 to 50.0 ppm, 10 ppm)
XNX Replacement Sensor Cartridge-Sulfur dioxide (SO2) 0-15.0 ppm (5.0 to 20.0 ppm, 5 ppm); 0-50.0 ppm (20.0 to 50.0 ppm, 10 ppm)