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New phase CHROMABOND^® HR-XC

Selection of CHROMABOND^® phases for SPE

	Your sample is soluble in water and not ionic ?
	Your sample is soluble in water and ionic ?
	Your sample is soluble in organic solvents ?
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Phase selection for water-soluble, non-ionic samples

Sample solvent	Sample polarity	Phases recommended for adsorption		Solvents recommended for elution (selection)
aqueous	nonpolar	RP phases	HR-X, HR-XC, Easy, HR-P	hexane, dichloromethane
			C18 ec, C18, C18 Hydra	acetonitrile, alcohols
			C8, C4, C2
			C₆H₁₁ ec, C₆H₅
		NP phases	CN	chloroform, dichloromethane,
aqueous	moderately polar		SiOH	ethyl acetate, alcohols, water
			NH₂
aqueous	polar		CN, OH	as above
			NH₂, DMA

Phase selection for water-soluble, ionic samples

Sample solvent	Sample polarity	Phases recommended for adsorption		Solvents recommended for elution (selection)
aqueous	cationic	Ion exchange phases	SA, PCA, PSA	acids, salt solutions, buffers
			HR-XC, PS-H⁺
aqueous	anionic		SB	acids, salt solutions, buffers
			PS-OH^–
		NP phases	NH₂, DMA

Phase selection for samples soluble in organic solvents

Sample solvent	Sample polarity	Phases recommended for adsorption		Solvents recommended for elution (selection)
aqueous	nonpolar	RP phases	HR-X, HR-XC, Easy, HR-P	hexane, dichloromethane
			C18 ec, C18, C18 Hydra	acetonitrile, alcohols
			C8, C4, C2
			C₆H₁₁ ec, C₆H₅
			PS-RP
		NP phases	CN	chloroform, dichloromethane,
organic	moderately polar		SiOH	ethyl acetate, alcohols, water
			NH₂
organic	polar		CN, OH	as above
			NH₂, DMA