Metrohm 788 IC Filtration Sample Processor - Manual (Page 104)

4 Operation
788 IC Filtration Sample Processor
96
4.5.4 Special beakers
Special beakers are reserved positions in a sample rack. 0 to 8 special
beakers can be defined per rack. They can be placed under the needle
during method processing for particular operations without interrupting
or hindering the sample series run. Special beakers can be used in a
sample sequence for rinsing the needle.
Special beakers are placed under the needle with
'MOVE 1 : spec.1' .
Reserved special beaker positions, that can be individually defined for
each rack, are recognized as such in a sample series and are omitted
during processing of the individual sample beakers.
For the 6.2041.430 sample rack, the two positions 128 and 129 are al-
ready defined as special positions for the 6.1608.080 PE bottles
(300 mL).
Sample method for the use of special beakers
With this method 'PCRinse' , modified from the standard method 'PC' ,
the needle and the tubing leading to the sample loop is rinsed with rins-
ing solution during 60 s after each sample. For this method, a
6.1608.080 PE bottle filled with rinsing solution must be set as special
beaker 2 on position 129 of the sample rack.
788 IC Filtr. Proc. 5.788.0010
parameters
method PCRinse
number of samples: rack
>start sequence
1 CTL:Rm: INIT
>sample sequence
1 SCN:Rm : Wait1
2 SCN:Rm : Pump1 ?
3 MOVE 1 : sample
4 LIFT: 1 : work mm
5 CTL:Rm: FILL A 1
6 PUMP 1.1 : 240 s
7 CTL:Rm: ZERO 1
8 CTL:Rm: INJECT A 1
9 MOVE 1 : spec.2
10 LIFT: 1 : rinse mm
11 PUMP 1.1 : 60 s
>final sequence
>changer settings
rack number 0
lift rate 1 12 mm/s
shift rate 20
>manual stop
CTL Rmt: **************
CTL RS232:
------------  Report header with serial number and program ver-
sion
 Method name
 Number of samples to be processed (entire sample
rack
 Initialize remote interface
 Wait until 732 IC Det. sends signal on remote line 3
 Wait until 709 IC Pump runs
 Move needle to sample
 Place needle at working position
 Switch injection valve A at 733 to "Fill"
 Fill sample loop with sample during 240 s
 Trigger autozero at 732 IC Detector
 Switch injection valve A at 733 to "Inject"
 Move needle to rinsing solution
 Place needle at rinsing position
 Rinse tubing to injection valve during 60 s with rins-
ing solution
 —— Settings for changer functions ——
 —— Reaction to manual stop ———