Determination of Caffeine in Soft Drinks and Ready-To-Drink (RTD)
Measuring caffeine in soft drinks and Ready-To-Drink (RTD) beverages - from energy drinks and functional sodas to RTD teas, cold brews, and caffeinated alcoholic RTDs - is essential to ensure consumer safety, recipe consistency, and regulatory compliance. Given caffeine's distinct taste profile and physiological effects, precise control is critical whether working with synthetic caffeine or natural extracts like tea, coffee, and guarana.
CDR DrinkLab® enables fast, accurate caffeine quantification, empowering producers to guarantee precise dosage, maintain flavor balance, and ensure strict labeling compliance across all product lines.
Method
Test type: End Point.
Testing time: 6 minutes.
Analysis sessions with multiple samples are possible up to a maximum of 16 tests for CDR DrinkLab®.
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Sample treatment
Degas using the ultrasonic bath (code 222062) before taking the sample, if necessary. Transfer 1 mL of extraction solution into a centrifuge tube. Add 100 µL of sample and 10 µL of R1a. Shake vigorously for 5 minutes and centrifuge at 10,000 rpm for 3 minutes.
Principle of the test
Caffeine is extracted from the beverage through an appropriate solvent. After centrifugation, the extract is measured spectrophotometrically and the absorbance of the sample is correlated to the concentration of caffeine.
Calibration curve
The calibration curve of the CDR DrinkLab® system, carried out using HPLC as a reference method, confirmed excellent linearity of the system throughout the measurement range.
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Reagent test Kits
Measuring range
| Analyses | Measuring range | Resolution | Repeatability |
|---|---|---|---|
| Caffeine [50-500] mg/L | 50 - 500 mg/L | 1 mg/L | 6 mg/L |
The perfect system for you
CDR DrinkLab®
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)