This section is dedicated to a new concept of doing nano ESI by use of a polypropylene nanospray chip. The idea is based on US Pat. No. 6,800,849B2, 6,864,480B2, 6,969,850B2, 7,618,576B2 owned by Phoenix S&T. The geometry of the spray nozzle will be dramatically different from the pulled fused silica capillary columns.
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