. Author manuscript; available in PMC: 2011 Jan 1.

Published in final edited form as: Ind Eng Chem Res. 2010;49(22):11206–11213. doi: 10.1021/ie101519u

Table II.

Minimum Contact Time of Cl-DDMH, Cl-DADT, and Cl-TMPL as Additives in PU to Provide a Total Kill of S. aureus and E. coli^*

Sample	Minimum contact time for a total kill at different additive level against S. aureus (min)			Minimum contact time for a total kill at different additive level against E. coli (min)
Sample	2 %	4 %	6 %	2 %	4 %	6 %
Cl-DDMH	5	5	5	5	5	5
Cl-DADT	30	15	5	30	30	5
Cl-TMPL	ND^**	ND	240	ND	ND	240

Each test was repeated three times, and the longest minimum contact time of the three tests for a total kill of the microbes (the weakest antimicrobial efficacy observed) was reported.

^**

ND: At this concentration, the sample could only provide a 2-3 log reduction of the test organisms; no total kill of the organisms could be observed within the 8 h of testing period.