Office Inhalation chamber   1.5g 3.0g 1.5g 3.0g Time (min) Average (ppm) SD Average (ppm) SD Average (ppm) SD Average (ppm) SD 0.5 389.2 302.0 227.4 136.4 340.3 173.8 383.3 84.9 1.0 779.8 303.8 761.8 480.2 460.3 114.9 844.5 90.6 1.5 164.9 195.9 415.9 239.7 115.6 74.1 285.7 76.1 2.0 49.2 72.6 92.9 55.0 25.4 4.8 51.3 9.9 2.5 28.4 30.7 46.8 22.6 21.2 1.6 40.8 3.1 3.0 22.5 19.0 32.6 7.6 19.2 1.3 38.8 4.3

Table 1: Average values of concentrations in ambient air (inhaled air) measured at 30-second intervals for 3 minutes of hand rubbing. Experiment was repeated 4 times.