Analysis	Technique	Precipitate	m/z	Products
CHX 2% (Sigma) Without polyethylene glycol	Fast atom bombardment (FAB)	____________	505	Chlorhexidine (not shown)
CHX 2% (Consepsis) with polyethylene glycol	Electron impact	_____________	89, 133, 177, 219, 459, 50, 547	CHX was not observed due to the high polyethylene glycol content (not shown)
CHX 2% (Consepsis) with polyethylene glycol	FAB	______________	505	CHX (Figure 1)
Polyethylene glycol (Fluka)	Electron impact	_______________	89, 133, 177, 219, 459, 503, 547	Polyethylene glycol spectra (not shown)
NaOCl + CHX (Sigma) without polyethylene glycol Time “0”	FAB	Brown	127 153	p-chloroaniline p-chlorophenyl isocyanate (Figure 3(a))
NaOCl + CHX (Consepsis) with polyethylene glycol 24 h	Electron impact	Brown	153	Complex spectrum due to the large amount of polyethylene glycol p-chlorophenyl isocyanate (not shown)
10 days	Electron impact	Brown	127 153	p-chloroaniline p-chlorophenyl isocyanate (not shown)
20 days	Electron impact	Brown	127 153	p-chloroaniline p-chlorophenyl isocyanate (not shown)
60 days	Linked scans	Brown	127 153	p-chloroaniline p-chlorophenyl isocyanate (not shown)
90 days	Electron impact	Brown	127 153	p-chloroaniline p-chlorophenyl isocyanate (not shown)
150 days	Electron impact	Brown	127 153	p-chloroaniline p-chlorophenyl isocyanate (not shown)
180 days	Electron impact	Brown	127 153 (almost disappeared)	p-chloroaniline (Figure 3(b))