. Eighth International congress of applied chemistry : Washington and New York, September 4 to 13, 1912 ... -- . on of anthrax spores with 5% phenol at °C. (SeeTable la above). (6) Disinfection of anthrax spores with mercuric chloride at18°C. (See Table lb above). Similar results were obtained for disinfection with Phenolof B. typhosus and B. coli commune: the results of a typicalexperiment with the former organism are shown in Table IIand fig. 2 on page 173. xxvi] Congress of Applied Chemistry 173 TABLE II.(H. C. 1910 Table II)Disinfection of B. typhosus with phenol at 20°
. Eighth International congress of applied chemistry : Washington and New York, September 4 to 13, 1912 ... -- . on of anthrax spores with 5% phenol at °C. (SeeTable la above). (6) Disinfection of anthrax spores with mercuric chloride at18°C. (See Table lb above). Similar results were obtained for disinfection with Phenolof B. typhosus and B. coli commune: the results of a typicalexperiment with the former organism are shown in Table IIand fig. 2 on page 173. xxvi] Congress of Applied Chemistry 173 TABLE II.(H. C. 1910 Table II)Disinfection of B. typhosus with phenol at 20° 8. 1. 10. Time,minutes= t Amountof sampletaken,drops Numberson plates(gelatine) Mean Mean no. ofbacteria presentin 1 dropdisinfectionmixture, =iV LogmiV 1 tn-to No l°*Nn = £o 1 236 218 240 1 188 215 167 190 190 .085 1 160 157 184 167 167 .067 2 215 242 .075 2 139 172 156 .077 3 100 93 91 .086 15 3 33 26 43 34 .090 20 5 14 14 8 12 .380 .102 30 10 4 3 .35 .096 Mean .086. Time, minutes Fig. 2. Disinfection of B. typhosus with phenol at 20°C. (a) 1. 10, Table II. 174 Original Communications: Eighth International [vol. In the case of Staphylococcus pyogenes aureus there was a shortperiod (4 minutes in case of phenol at 20C) at the beginningof disinfection, after which disinfection conformed to the usualtype and proceeded as a reaction of the first order (see TableIII and fig. 3). TABLE III.(H. C, 1910, Table VI) Disinfection of Staphylococcus pyogenes aureus with phenol at 20° C. Exp. 6. 4. 09. Time,minutes= t Amountof sampletaken,drops Numberscountedon plates(agar) Mean Mean no. ofbacteria presentin 1 dropdisinfectionmixture, =N LogioiV K=1 1 N Control 1369 1218 1293 1293 1 1160 1120 1143 1141 1141 3 974 1064 1093 1044 1044 4 = *0 986 929 940 952 952 = AT0 5 693 669 762 708 708 ? .129 6 2
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