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HPLC Columns

		Asahipak
		DuraGel
		FluororGel
	Neos Tech	Fluofix
		Hi-Q
		Hypersil
		Kromasil
		Mitsubishi
		Polar-Bond
		Ultro
		Wako Pure Chemical Industries Ltd
		ZirChrom Separations, Inc

GC Columns

		Advanced Separation Technologies, Inc
		Valco Instruments Co., Inc