Facing p. t710
Micro-organisms on human skin 611 9O 80 70 60 50 40 30- 20- I0- 0 500 - 400- -- 300 - -- 200 - I00 - -- o 90o 8oo 700 6oo 5o0 400 300 200 IOO o - (4) -- -- (5) -- (3) -- I00 500 I000 2000 3000 200 Volume (ml) Figure 3. Recovery of aerobic bacteria from axilla over an area of 14q• (mm). Figure 4. Recovery of aerobic bacteria from axilla over an area of 2q• (mm). Figure 5. Recovery of aerobic bacteria from axilla over an area of 5q• (mm). Table I. Observed washing efficiencies of different diameter sprayheads Diameter of sprayhead (mm) Percentage washing efficacy 50 ml 100 ml 2 69 89 5 58 78 14 18 25
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