Metrohm MVA-20 - Manual

Application Bulletin 402/1 e
Installation instruction for MVA-20:
894 Professional CVS fully automated for CVS determinations
The «MVA-20» is a fully automated system for the
determination of suppressor and brightener in plating
solutions in small sample series.
•
PC controlled operation.
•
Manual operations:
o Filling of the sample vials on the Autosampler
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-20
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 – 919 IC Autosampler plus for CVS ......... 6
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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