Determination of zinc in water used for making coffee
Zinc analysis 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 Principle
Zinc reacts in an alkaline environment with a chromogen to form a colored complex, whose absorbance measured at 578 nm is proportional to the amount of analyte present in the water sample.
Calibration curve
The calibration curve was constructed using standard zinc 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
Measuring range
| Analyses | Measuring range | Resolution | Repeatability |
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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)