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The RS-8L--NCSPE absolutely support operation procedure steps of solid phase extraction. It controls speed accurate by digital when solution through column. It has those function: positive pressure elution, high volume continuous sampling, and timing. It can ensure the recovery rate and purity for analysis of target material, reduce relative deviation, and avoid the cross injection between samples. It can deal several samples together. Operating and maintenance are easy. Thus, it will greatly improve work efficiency.The national utility model patent NO.:ZL200620060040.6
