iCheck Fluoro measures vitamin A in biological fluids and food

iCheck™ Fluoro is a state-of-the-art portable fluorometer. It determines vitamin A quantitatively in food and biological fluids. Using innovative technology it measures the fluorescence of vitamin A in the sample. The vitamin A concentration is displayed in μg RE/L (RE=retinol equivalent). It is used to measure vitamin A in vitamin premixes, sugar, flour, milk and biological fluids such as breast milk.


Analyte: Vitamin A (retinol) as retinyl palmitate, retinyl acetate and other esters

Sample: Food: premix, liquid milk, milk powder, flour, sugar, bouillon powder; biological fluids: breast milk, whole blood, serum

Sample preparation: For solid samples: dilution and homogenization is distilled or bottled water

Sample volume per analysis: 0.5 mL (500 μL)

Concentration range: >0.05 ppm (mg/kg), samples above 3.0 ppm must be diluted in water

Analytical method: Fluorimetric determination of retinol concentration using ultraviolate (UV) excitation

Units displayed: μg RE/L, RE – retinol equivalents, μg – microgramms

Linear range: 50–3000 μg RE/L

Calibration: Factory set (standards included for control)

Time per analysis: < 10 min

Enviroment: 20-30°C, no direct sunlight

Accuracy at 95% confidence interval at 25°C : ±5-25% (depends on the sample type)

Method comparison: High-performance liquid chromatography (HPLC)

User training: 1 day training

Use: Laboratory and field

Data output: Sample #, Batch #, Result, Date, Time (in transferred data)

Connectivity and data: Results are stored in the device and transferred to a PC via USB

Power source: NiMH rechargeable batteries included; AA 1.2 or 1.5V

Warranty: 2 years

Device weight: 0.45 kg

Device dimensions: 11 x 4 x 20 cm (W x H x L)

Content: 100 reagent vials; 100 syringes – 1.0 mL; 100 needles – 1.6mm x 25mm

Chemical composition: n-Hexan and alcohols

Volume per reagent vial: 2.0 mL

Shelf life: 12 months at 20-30°C, no direct sunlight, upright

Dimension of test kit: 26 x 14.5 x 16.5 cm

Disposal instructions: Hazardous waste

Optional equipment : Manual centrifuge, 50 mL falcons, weighing dishes, reference samples 

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