Colorimetric test system.
Range 1 to 15ppm Includes 50 nitrate No. 1 tablets, 50 nitrate No. 2 test tablets, two plastic test tubes with caps, Octa slide viewer with slide bar, instructions. Test Method: Zinc ReductionColorimetric test system.
Range 1 to 15ppm Includes 50 nitrate No. 1 tablets, 50 nitrate No. 2 test tablets, two plastic test tubes with caps, Octa slide viewer with slide bar, instructions. Test Method: Zinc Reduction