The Norwegian Directory of Labour Inspection has set exposure limits of 1 ppm of H2O2 for 8 h of exposure and less than 3 ppm for 15 min four times a day.
The Norwegian Directory of Labour Inspection has set exposurelimits of 1 ppm of H2O2 for 8 h of exposure and lessthan 3 ppm for 15 min four times a day.