Two 2 quart bottles (1 gallon) of Nature's Comfort boiler treatment. Can be used in any brand boiler.
1000-1500ppm (500ppm min.) of Nitrite concentration must be maintained at all times.1 cup/100gal = 200ppm, 2qt/100gal = 1,600ppm
Initial treatment ratios needed for: NCB-80: 0.5gal, NCB-120: 0.75gal, NCB-175: 1.00, NCB-250 & GT6000: 1.25gal,NCB-275G: 1.5gal, NCB-325G: 1.75gal, NCB-400G: 2gal