Determination of Gold in Gold Flash bath

The analysis of the gold concentration in Gold Flash plating baths is crucial to optimize the electrodeposition parameters (e.g. time, deposit thickness), ensuring uniform deposits (0.2-0.3 µm) and preventing aesthetic or functional defects in the finished products. Determining the quantity of gold ensures high yield and compliance with environmental regulations. A punctual control on the bath allows to precisely monitor the gold concentration, avoiding losses of the precious metal and reducing waiting times for analysis and corrections.

Method

Test type: End Point.

Testing time: 1 minute.

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 1/12
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 2/12
Collect 10 µL of R2 with the pipette.
Passo 3
Step 3/12
Carefully clean the outside of the pipette tip with blotting paper, avoiding contact between the extremity of the tip and the paper.
Passo 4
Step 4/12
Place the R2 reagent in the cuvette. Keeping the tip immersed in reagent, press and release the piston of the pipette several times.
Passo 5
Step 5/12
Gently shake the cuvette 2-3 times.
Passo 6
Step 6/12
Place the cuvette in one of the incubation cells and start the timer by pressing the timer icon.
Passo 7
Step 7/12
Gently shake the cuvette 2-3 times.
Passo 8
Step 8/12
Select the cuvette to be read from the display. Place the cuvette in the cell marked with the blue light and press READ.
Passo 9
Step 9/12
Collect 100 µL of sample with a pipette. Use a new tip for each test to prevent contamination from previous samples.
Passo 10
Step 10/12
Carefully clean the outside of the pipette tip with blotting paper, avoiding contact between the extremity of the tip and the paper.
Passo 11
Step 11/12
Place the sample in the cuvette.
Passo 12
Step 12/12
Place the cuvette in the cell marked with the blue light and press READ to perform the photometric reading.
8%

Sample treatment

The sample can be used as is.

Principle of the test

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

Calibration curve

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

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

Reagent test Kits

Code *400210: 100 test
Code *400215: 10 test
The reagents have a shelf-life of 4 months

Measuring range

AnalysesMeasuring rangeResolutionRepeatability
Gold on Gold Flash0.1 - 1.2 g/L0.010 g/L0.02 g/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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