PC Board for the Auto sampler (cartridge handling system) on the 431 and the 433 Peptide Synthesizers, Exchange. Since this is an exchange part, you must return your old part complete with all components. If you do not return your part or you return it missing components, you will be charged as though you purchased a new part without exchange. If you do not want to send your old part back to us, you should purchase this same item as non exchange from us.
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