Metrohm 838 Advanced Sample Processor Manual - Manual (Page 89)

3.8 Standard methods
Metrohm 838 Advanced Sample Processor, Appendix 81
3.8.1 Method "LAT"
LAT = Linear Approximation Technique
Application
Brightener analysis (electroplating bath analysis)
System setup
See 8.838.1303 Installation Instructions, Section 3.6 or 8.797.1013
Hardware Manual of the 797 VA Computrace, Section 2.11.5.
Run sequences for the 838 Advanced Sample Processor
838 Advanced S.Proc. 00030 5.838.0010
parameters
method LAT
number of samples: rack
>start sequence
1 CTL:Rm: INIT
2 MOVE 1 : sample
3 CTL:Rm: *************1
4 CTL:Rm: *************0
>sample sequence
1 SCN:Rm : *****1**
2 MOVE 1 : sample
3 LIFT: 1 : work mm
4 PERISTALT: 300 s 10
5 CTL:Rm: *************1
6 CTL:Rm: *************0
7 MOVE 1 : +28
8 LIFT: 1 : work mm
9 PERISTALT: 5 s 10
10 SCN:Rm : *****1**
11 PERISTALT: 300 s 10
12 CTL:Rm: *************1
13 CTL:Rm: *************0
>final sequence
>changer settings
>dosing unit def.
>timeout settings
>manual stop
- report header with instrument ID and program version
- method name
- number of samples (e. g. entire rack)
- initialize all Remote lines
- approach first sample
- remote start of the 797 VA Computrace
- wait for advance signal of the 797 VA Computrace
- approach sample
- run lift and needle to work position
- transfer sample with peristaltic pump
- set Remote line: sample transfer ready
- approach rinsing vessel
- run needle to work position
- aspirate rinsing solution
- wait for advance signal of the 797 VA Computrace
- rinse needle and transfer tubing
- set Remote line: needle cleaning ready
----- miscellaneous settings -----
6.2041.450 sample rack
50 mL sample vessels can be placed on the two outer rings (11 mL
sample vessels on the two inner rings).
Arrangement: Place on the outer of the two rings alternately "Intercept
solution" and sample solution, on the inner of the two rings the rinsing
solution.
Example for an arrangement with 7 samples:
⇒ With 50 mL sample vessels: first sample on position 1, first rinsing
solution on position 29: