Min. Order Reference FOB Price
500 Pieces US$0.03-0.04 / Piece
Product Description
Product Description PSA (Ethylenediamine - N - propyl) selectivity is similar to NH2, at the same time can be used as a positive phase or reverse phase cartridge, the polarity stronger than C18 more and weaker than silica gel, and a wider range of medium polarity or many kinds of compounds in ...