Determination of Bicarbonate concentration in process water

Determining bicarbonate levels is essential for assessing the suitability of the water used in the various stages of the electroplating process. Monitoring helps prevent the formation of scale and metal precipitates on treated surfaces, while ensuring pH stability in the rinse water to avoid corrosion or contamination of subsequent baths.

Method

Test type: End Point.

Testing time: 10 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 1/10
Place the test tubes containing reagent R1 in one of the incubation cells and let them warm for at least 10 minutes.
Passo 2
Step 2/10
Gently shake the cuvette 2-3 times.
Passo 3
Step 3/10
Select the cuvette to be read from the display. Place the cuvette in the cell marked with the blue light and press READ.
Passo 4
Step 4/10
Collect 50 µL of sample with a pipette. Use a new tip for each test to prevent contamination from previous samples.
Passo 5
Step 5/10
Carefully clean the outside of the pipette tip with blotting paper, avoiding contact between the extremity of the tip and the paper.
Passo 6
Step 6/10
Place the sample in the cuvette. Keeping the tip immersed in reagent, press and release the piston of the pipette several times.
Passo 7
Step 7/10
Gently shake the cuvette 2-3 times.
Passo 8
Step 8/10
Place the cuvette in one of the incubation cells and start the timer by pressing the timer icon.
Passo 9
Step 9/10
Gently shake the cuvette 2-3 times.
Passo 10
Step 10/10
Insert test tube in the reading cell marked with the blue light.
10%

Sample treatment

Use the sample as it is.

Principle of the test

The bicarbonate ion reacts with an enzymatic complex that leads to the oxidation of NADH. The decrease in absorbance measured at 366 nm is proportional to the amount of the analyte present in the water sample.

Calibration curve

The calibration curve was constructed using standard bicarbonate solutions. The trend of the curve confirmed an excellent linearity of the system over the whole measuring range.

Bicarbonate Analysis in Process Water: Calibration Curve of the CDR GalvanLab® instrument with the reference method

Reagent test Kits

Code *400300: 100 test
Code *400305: 10 test
The reagents have a shelf-life of 12 months

Measuring range

AnalysesMeasuring rangeResolutionRepeatability
Bicarbonate1 - 300 ppm1.000 ppm3 ppm

The chemical analysis instrument 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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