Metrohm 766 IC Sample Processor - Manual (Page 6)

1.1 Instrument description
766 IC Sample Processor
1
1 Introduction
1.1 Instrument description
The 766 IC Sample Processor can be used for automating ion chro-
matographic determinations, especially in combination with the
Metrohm IC system instruments. The 127 sample tubes with a volume
of up to 11 mL are arranged on the sample rack in three rows, which
guarantees easy access and unrestricted programming. Two additional
rinsing positions allow sample introduction free from cross-
contamination even with widely varying sample matrices. If the 766 IC
Sample Processor is used together with the 732 IC Detector and the
733 IC Separation Center, various injections are possible from a single
sample tube, depending on the sample size. Sample tubes made of
polypropylene are standard. To protect the samples from external con-
tamination, the tubes can be hermetically sealed.
Sample introduction from the 766 IC Sample Processor is achieved by
means of its integrated peristaltic pump. The sample is conveyed by
the pump through the capillary into the sample loop of the injector lo-
cated within the 733 IC Separation Center. A steel needle for sealed or
a PEEK needle for open sample tubes can be used alternatively. Owing
to the relatively large volume of the sample tubes the 766 IC Sample
Processor can also be used for applications with enrichment columns,
dialysis (with the 754 Dialysis Unit) or simultaneous anion/cation deter-
minations.
The sequences for the processing of each sample are freely definable
within broad boundaries. The same is true for the start and final se-
quences that are executed once either before or at the end of a sample
series. With the help of the LEARN mode, which is provided for creating
process methods, methods can be created easily and stored as user
methods.
Preprogrammed standard methods for the most common modes of
operation allow to use the 766 IC Sample Processor directly, with only
little programming effort. The time frame can be given by the IC Sample
Processor; alternatively, the whole sequence can be managed by the
«
IC Metrodata» remote control software via the «Queue» (sample ta-
ble). The RS232 interface built in as standard allows remote control of
the IC Sample Processor from a PC.