SPE Ion exchange phases

Summary of ion exchange phases for SPE
Code	Matrix	Particle size	Pore size	Specification
HR-XC	PS/DVB	45 µm / 85 µm	65–75 Å	benzenesulfonic acid modification, very strong mixed mode cation exchanger (MCX)
HR-XA	PS/DVB	45 µm / 85 µm	55–65 Å	quaternary ammonium modification, very strong mixed mode anion exchanger (MAX)
HR-XCW	PS/DVB	45 µm / 85 µm	50–60 Å	carboxylic acid modification, weak mixed mode cation exchanger (WCX)
HR-XAW	PS/DVB	45 µm / 85 µm	55–65 Å	secondary and tertiary ammonium modification, weak mixed mode anion exchanger (WAX)
SA	silica	45 μm	60 Å	benzenesulfonic acid modification, strongly acidic cation exchanger (SCX)
SB	silica	45 μm	60 Å	quaternary ammonium modification, strongly basic anion exchanger (SAX)
PCA	silica	45 μm	60 Å	propylcarboxylic acid modification, weakly acid cation exchanger (WCX)
PSA	silica	45 μm	60 Å	propylsulfonic acid modification, very strong cation exchanger
PS-OH^–	PS/DVB	100 μm	100 Å	PS/DVB anion exchanger, OH^– form for removal or concentration of anions from water, increasing the pH value in acidic samples
PS-H⁺	PS/DVB	100 μm	100 Å	PS/DVB cation exchanger, H⁺ form for removal or concentration of cations from water, decreasing the pH value of basic samples
PS-Mix	PS/DVB	100 μm	100 Å	mixture of PS-H⁺ and PS-OH^– for desalting of water
PS-Ag⁺	PS/DVB	100 μm	100 Å	PS/DVB cation exchanger, Ag⁺ form for removal of halide ions from water
PS-Ba²⁺	PS/DVB	100 μm	100 Å	PS/DVB cation exchanger, Ba²⁺ form for removal of sulfate ions from water