APHA Standard Methods, 22nd ed., Method 4500-Cl G - 2000; USEPA Methods for Chemical Analysis of Water and Wastes, Method 330.5 (1983)
The sample is treated with an excess of potassium iodide. Ozone oxidizes the iodide to iodine, and the iodine then oxidizes DPD (N,N-diethyl-p-phenylenediamine) to form a pink colored species in direct proportion to the ozone concentration. Results are expressed as ppm (mg/L) O3.
Range: 0-5.00 ppm
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California Regulatory Warning
All of Ozone Solutions ozone generators are intended for industrial use ONLY.
Use in unoccupied spaces only.
Health hazard warning: emits ozone.
This product is not CARB Certified (Ozone Emissions for Air Cleaners).
Product Disclaimer: Does not meet California air cleaner regulation requirements; cannot be shipped to California.