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List of Illustrations
A Slit Sampler for Prolonged Recording by E Schuster
18 other sections not shown
a-hydroxy-a-methylbutyric acid aerial concentration aerial disinfectants aerosol agar plates air changes air disinfection air sampling air temperature airborne bacteria apparatus approximately average bacilli bacteria bacteria-carrying particles bactericide blanket broth calculated cent chamber changes per hour chemical circulation colony counts compartment containing cu.ft culture plate curve described diameter die-away rate dispersed duct effect estimated experimental experiments ferret figures filters floor furnace glycollic acids heating hypochlorite hypochlorous acid incubation infection lactic acid laevulinic lamp logarithmic Lovelock mask mean measured Mess Deck method minutes number of bacteria number of bacteria-carrying number of colonies O. M. Lidwell obtained period Petri plates Petri ratio propylene glycol recirculation reduced relative humidity resorcinol rotating salivary organisms Section sedimentation shows slit sampler sodium hypochlorite solution spores spraying spit sterile Strep streptococci surface Table theatre tube ultraviolet radiation values vapour concentration vapour pressure velocity ventilation rate virus