Combined Electrospray/Atmospheric Pressure Chemical Ionization (Esci); Atmospheric Solids Analysis Probe (Asap) - Waters Xevo G2-XS QTof Overview And Maintenance Manual

the mobile phase react with the reagent ions at atmospheric pressure and
typically become protonated (in the positive ion mode) or deprotonated (in the
negative ion mode). The sample and reagent ions then pass through the
sample cone and into the mass spectrometer.
Combined electrospray/atmospheric pressure chemical
ionization (ESCi)
In ESCi mode, the standard ESI probe is used in conjunction with a corona
pin. The design allows alternating acquisition of ESI and APCI ionization
data, facilitating high-throughput processing and wider compound coverage.

Atmospheric solids analysis probe (ASAP)

The ASAP facilitates rapid analysis of volatile and semivolatile compounds in
solids, liquids, and polymers. It is particularly suited to analyzing low-polarity
compounds.The ASAP directly replaces the electrospray or IonSABRE II
probe in the instrument's source housing and has no external gas or electrical
connections.
For further details, see the Atmospheric Solids Analysis Probe Operator's
Guide Supplement (part number 715002034).
LockSpray source and ionization modes
April 2, 2015, 715004496 Rev. B 33