Table 1.

Minimal inhibitory concentration (MIC) and minimal bactericidal inhibitory concentration (*MBC) monomeric quaternary ammonium salts (QAS) with different counterion (Me—methylcarbonates, Ac—acetates, Br—bromides) and aliphatic chain length (C12, C14, C16).

Strain	Compound
	Minimal inhibitory concentration (MIC) and minimal bactericidal concentration (*MBC) of tested compounds [µM]
	MeC12	MeC14	MeC16	AcC12	AcC14	AcC16	BrC12	BrC14	BrC16
S. epidermidis ATCC 35984	320 *640	40 *40	40 *40	640 *640	160 *160	640 *640	640 *640	160 *160	640 *640
S. epidermidis B374	640 *160	80 *160	80 *160	320 *320	40 *40	40 *40	640 *640	640 * > 640	10 *10
S. epidermidis SI8	320 *640	40 *40	10 *10	640 *640	160 *160	10 *10	640 *640	160 *160	10 *10
S. aureus ATCC 6538	320 *640	80 *80	10 *10	1280 *1280	160 *160	80 *80	1280 *1280	320 *320	320 *320
S. aureus MRSA R98	640 *640	80 *80	40 *40	640 *640	160 *160	10 *10	640 *640	320 *320	320 *320
E. coli ATCC 11229	640 *640	320 *320	320 *320	1280 *1280	320 *320	80 *160	1280 *1280	> 1280 * > 1280	640 *1280
E. coli H64	640 *640	80 *80	80 *80	1280 *1280	160 *160	160 *320	1280 *1280	320 *320	160 *160
P. aeruginosa ATCC 27853	> 1280 * > 1280	1280 * > 1280	> 1280 * > 1280	> 1280 * > 1280	1280 * > 1280	> 1280 * > 1280	1280 *1280	1280 *1280	> 1280 * > 1280
P. aeruginosa PAO1	> 1280 * > 1280	> 1280 * > 1280	> 1280 * > 1280	> 1280 * > 1280	> 1280 * > 1280	> 1280 * > 1280	> 1280 * > 1280	> 1280 * > 1280	> 1280 * > 1280