Aijiren mass selective detector (G1946A) with Aijiren API-Electrospray source (G1948A). A syringe pump which can deliver a precise flow rate of 1–5 µl/min or a Aijiren Series pump with an optional Aijiren Series vacuum degasser to add the sheath liquid. The Aijiren CE-ESI-MS sprayer kit, containing the items shown in Table 1.