****!!!!**** {Broad range of foundational info} "A 70 kg person could safely ingest 0.05 mg of chlorite x 70 kg... per day"

****!!!!**** {Summary with well-divided reference sections} View osha standards for chlorine dioxide in WISER. "Vacated 1989 OSHA PEL TWA 0.1 ppm (0.3 mg/cu m); STEL 0.3 ppm (0.9 mg/cu m) is still enforced in some states."

****!!!!****!!!*** "OSHA defines "commercial grade" as a typical maximum concentration of the chemical that is commercially available and shipped. The term "commercial grade" includes reagent grades, which, in some cases, will be in different concentrations from the typical commercial grades." "Chlorine Dioxide (ClO(2)), which is not commercially available and which is produced in a workplace process, the threshold quantity is determined not only by the free standing quantity of the HHC, for example, ClO(2) gas but also by the amount of HHC(s) in the mixture(s), for example, ClO(2) in a water solution. A process containing 150 pounds (68.00 kg) of ClO(2) gas and 900,000 pounds (408,231.00 kg) of ClO(2) water solution would be covered as follows. Assuming that the ClO(2) is 0.1 percent by weight of the water solution, there is 900 pounds (408.23 kg) of ClO(2) in the water solution. This process contains 150 + 900 or 1050 pounds (476.27 kg) of ClO(2) which is greater than the threshold quantity of 1000 pounds."

****!!!!**** "For promulgating health standards, the usual hourly, daily, weekly, and yearly components when calculating an employee's "working life" are 8 hours per day, 5 days per week, 48 weeks per year for 45 years."

****!!!!****!!!!**** (1991) {Is this back-up method? Or actually fully validated?} "Collection devide: An air sample is collected using a calibrated sampling pump and a midget fritted glass bubbler. The bubbler contains a collection solution of 0.02% potassium iodide (KI) in a sodium carbonate/sodium bicarbonate buffer." "Analytical Procedure: In the weakly basic solution, chlorine dioxide reacts with KI to form chlorite (ClO2¯) which is then determined by an ion chromatograph equipped with a conductivity detector and gradient pump." "The stock standard should be standardized at least monthly. It was noted during testing that this standard solution decreases in concentration approximately 4% per month. No significant difference in results was noted when sampling at different humidities. As shown in the mixture study, Cl2 does not interfere with the sampling or ion chromatographic analysis of ClO2 at the concentrations tested. Although a resultant 10% decrease in ClO2 and 7% increase in Cl2 concentrations occurred, this could have been due to the difficulty in generating both gases simultaneously. A mixture of ClO2 and Cl2 can be collected and analyzed together; however,Cl2 measurements are considered for screening purposes only. Further work is necessary to validate the KI/buffer sampling and IC analysis for Cl2.Detection limits are adequate if samples are taken for 240 min at 0.5 L/min"

[for Poultry Meat Rinse, and Fruits & Vegs that are not "raw agricultural commodities." Ingredients listed for acceptable use for generation of Chlorine Dioxide for these food purposes do not include Citric Acid.] §173.300 Chlorine dioxide.