Determination of Copper concentration in Ruthenium electroplating baths

Copper analysis allows the quantification of Cu2+ concentration in ruthenium electroplating baths. Copper can contaminate ruthenium baths causing issues of aesthetic and functional defects in finished products (e.g. pitting, flaking, pitting corrosion). Monitoring the concentration of copper in ruthenium baths is essential as part of the quality control of galvanic processes to ensure their efficiency and meet the high quality standards required by the market.

Method

Test type: End Point.

Testing time: 2 minutes.

Analysis sessions with multiple samples are possible up to a maximum of 16 tests for CDR GalvanLab® and 3 tests for CDR GalvanLab® Junior.

Passo 1
Step 1/14
Place the test tubes containing reagent R1 in one of the incubation cells and let them warm for at least 5 minutes.
Passo 2
Step 2/14
Collect 50 µL of R1a with a pipette.
Passo 3
Step 3/14
Add 50 µL of R1a to the cuvette containing reagent R1 without touching the tip in the liquid. In case of contamination, replace the tip.
Passo 4
Step 4/14
Collect 50 µL of R2 with the pipette.
Passo 5
Step 5/14
Add 50 µL of R2 to the cuvette without touching the tip in the liquid, R1 + sample. In case of contamination, replace the tip.
Passo 6
Step 6/14
Collect 100 µL of R3 with the pipette.
Passo 7
Step 7/14
Add 100 µL of R3 to the cuvette without touching the tip in the liquid. In case of contamination, replace the tip.
Passo 8
Step 8/14
Gently shake the cuvette 2-3 times.
Passo 9
Step 9/14
Select the cuvette to be read from the display. Place the cuvette in the cell marked with the blue light and press READ.
Passo 10
Step 10/14
Collect 100 µL of sample with a pipette. Use a new tip for each test to prevent contamination from previous samples.
Passo 11
Step 11/14
Carefully clean the outside of the pipette tip with blotting paper, avoiding contact between the extremity of the tip and the paper.
Passo 12
Step 12/14
Place the sample in the cuvette. Keeping the tip immersed in reagent, press and release the piston of the pipette several times.
Passo 13
Step 13/14
Gently shake the cuvette 2-3 times.
Passo 14
Step 14/14
Place the cuvette in the cell marked with the blue light and press READ to perform the photometric reading.
7%

Sample treatment

The sample can be used as is.

Principle of the test

Copper content is determined by its reaction with a chromogen that develops a coloration, the optical intensity of which is proportional to the concentration of Cu in the analyzed sample.

Calibration curve

Calibration curve was obtained by correlating the CDR method with the reference method.

Copper Analysis in Ruthenium Baths: Calibration Curve of the CDR GalvanLab® instrument with the reference method.

Reagent test Kits

Code *400040: 100 test
Code *400045: 10 test
The reagents have a shelf-life of 12 months

Measuring range

AnalysesMeasuring rangeResolutionRepeatability
Copper on Ru bath3 - 25 mg/L0.100 mg/L0.6 mg/L

The chemical analysis instruments for electroplating baths

CDR GalvanLab®

  • Complete analysis panel, supplied already configured
  • Up to 16 determinations simultaneously
  • Possibility of carrying out analyses of the same sample
  • Integrated printer
  • Full connections (LAN - USB - Bluetooth barcode/QR code reader)

CDR GalvanLab® Jr

  • Partial analysis panel, customisable configuration
  • Up to 3 determinations simultaneously
  • Wireless connection to external printer
  • USB connections
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