Metrohm MiPT User Manual
Page 12
2.3 Mode of operation of intelligent Partial Loop Injection
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IC-Ausrüstung: MiPT
2.3
Mode of operation of intelligent Partial Loop Injec-
tion
1.
At the beginning of the determination, the Dosino's 2 mL dosing unit
is emptied.
2.
Aspirating sample
a. The sample (or the standard solution) is aspirated with the 2
mL dosing unit into the transfer capillary.
b. The Sample Processor needle is moved to the waste position
(outer area of the rinsing unit).
3.
Filling the sample loop
a. The injection valve is switched to the Fill position.
b. The 800 Dosino doses the injection volume from the transfer
tubing to the 250 µL sample loop.
c. Excess sample is transferred to the needle and discarded over
the waste position.
4.
Injecting and rinsing
a. The injection valve is switched to the Inject position. The sam-
ple is injected into the separation column with the eluent.
b. At the same time, the Sample Processor needle is moved to
the rinse position (inner area of the rinsing unit) and cleaned.