Metrohm MVA-21 - Manual

Application Bulletin 403/1 e
Installation instruction for MVA-21:
894 Professional CVS fully automated for CVS determinations
The «MVA-21» is a fully automated system for the
determination of suppressor and brightener in plating
solutions.
•
PC controlled operation.
•
Manual operations:
o Filling of the sample vials on the Sample
Processor with suppressor standard solution,
plating bath samples and rinsing solution.
•
Automatic addition of 4 solutions: VMS, brightener
concentrate, suppressor concentrate and suppressor
standard or plating bath sample.
•
Automatic rinsing of the measuring vessel.
•
Method change during the determination series is
possible.
•
Applications:
o Analysis of suppressor concentration in plating
baths with CVS.
o Analysis of brightener concentration in plating
baths with CVS.
Fig 1 MVA-21
Content
1. Instruments and accessories .......................................... 2
2. System setup .................................................................. 2
2.1. Electrical connections ......................................... 2
2.2. Tubing connections for rinsing and draining of the
measuring vessel ................................................ 3
2.3. Tubing connections for automatic dosing of
standard solutions and auxiliary solutions ........... 4
3. viva Configuration ........................................................... 5
3.1. Devices – 894 Profesional CVS .......................... 5
3.2. Sensors/Electrodes ............................................. 5
3.3. Dosing units ........................................................ 5
3.4. Solutions ............................................................. 6
3.5. Devices – 858 Professional Sample Processor for
CVS ..................................................................... 6
3.6. Needle adjustment .............................................. 7
4. viva «Method» ................................................................ 8
4.1. Method run .......................................................... 8
4.2. Evaluation ........................................................... 9
5. Operation...................................................................... 10
5.1. Suppressor determination series ...................... 10
5.2. Brightener determination series ........................ 11
6. Remarks ....................................................................... 12
6.1. Single additive setup ......................................... 12
6.2. Combination of applications .............................. 12
6.3. Storing dosing units........................................... 12
6.4. Storing electrodes ............................................. 12
6.5. Waste container ................................................ 12
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