e6503375_009__Tanpa_Klasifikasi_Lugansk__3
[0] 136. [1] The germ pollution of operation room after operating was 2500 CFU/m3. They sanitize air with UV-lamps. What percent should germ pollution be decreased to consider the sanitation effective? [2] *80\% [4] 40\% [5] 60\% [6] 99\% [3] 
20\%
Krok 2009: Tanpa Klasifikasi Lugansk
3