pumping modifier in prep flow

angielski > polski Nauki ścisłe Chemia, inżynieria chemiczna

Opis sprzętu i warunków do preparatywnej LC-MS. Mam problem z rozszyfrowaniem kilku skrótowo opisanych elementów tego procesu.
pumping modifier in prep flow - pompowanie modyfikatora w ?

Agilent 1100 LC-MS preparative system:
• Hardware:
Autosampler: 1100 series "prepALS"
Pump: 1100 series "PrepPump" for preparative flow gradient and 1100 series "QuatPump" for pumping modifier in prep flow
UV detector: 1100 series "MWD" Multi Wavelength Detector
MS detector: 1100 series "LC-MSD VL"
Fraction Collector: 2 x "Prep-FC"
Make Up pump: "Waters RMA"
Agilent Active Splitter
• Agilent MS running conditions:
Capillary voltage: 4000 V (3500 V on ES Negative)
Fragmentor/Gain: 150/1
Drying gas flow: 12.0 L/min
Gas Temperature: 350 °C
Nebuliser Pressure: 50 psig
Scan Range: 125-800 amu
lonisation Mode: ElectroSpray Positive or ElectroSpray Negative