Determination of chloride in water
The analysis of chloride allows, in a simple and fast way, to quantify the concentration of the analyte in the water used in the coffee brewing process.
Method
Test type: End Point.
Time testing: 1 minute.
Analysis sessions with multiple samples are possible up to a maximum of 16 for CDR CoffeeLab®.
Sample treatment
Use water as is.
Test Principle
The chloride ions react with the mercuric thiocyanate and release thiocyanate ions. The thiocyanate ions react with Fe (III) giving an orange complex whose intensity, measured at 520 nm, is directly proportional to the concentration of chlorides in the sample.
Calibration curve
The calibration curve was constructed using standard chlorides solutions. The trend of the curve confirmed an excellent linearity of the system over the whole measuring range.
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Reagent test Kits
Code *300705: 10 test
Code *300710: 100 test
The reagents have a shelf-life of 12 months
Measuring range
| Analyses | Measuring range | Resolution | Repeatability |
|---|---|---|---|
| Chloride [50-500] ppm | 50 - 500 ppm | 1 ppm | 21 ppm |
| Chloride [15-250] ppm | 15 - 250 ppm | 1 ppm | 11 ppm |
CDR CoffeeLab® - the analysis equipment for the world of coffee from origins to roasting
CDR CoffeeLab®
- 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)