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iCheck Chroma

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iCheck Chroma is a state-of-the-art portable photometer for measuring vitamin A concentration in edible oil. The iCheck is specifically developed and equipped with innovative technology to enable technically sophisticated measurement of absorption. iCheck Chroma displays vitamin A concentration in mg RE/kg.

Scientific Publications:

1. Renaud, C. Quantification of vitamin A in fortified rapeseed, groundnut and soya oils using a simple portable device: comparison to high performance liquid chromatography. International Journal for Vitamin and Nutrition Research, 2013.

2. Rohner, F. Quantification of vitamin A in palm oil using a fast and simple portable device: method validation and comparison to high-performance liquid chromatography International Journal for Vitamin and Nutrition Research, 2011.


Technical data
Analyte: Retinyl palmitate
Sample type: Refined edible oils: palm, sunflower, corn, peanut, rapeseed, coconut
Sample preparation: Not required
Analysis method: Photometric
Principle of reaction: Absorption
Sample volume per analysis: 500 μL (0.5 mL)
Linear range: 3 –30 mg retinol equivalents (RE)/ kg
Time per analysis: < 2 min
Optimal measuring temperature: 20 –30°C
Variation: < 10%
Method comparison: Validated against reference method High-performance liquid chromatography (HPLC)
Light source: LED lamp
Staff qualification: 1 day training
Use: portable
Data transfer: Included (via USB cable)
Weight: 0.45 kg
Dimensions: 11 x 4 x 20 cm (W xHx L)

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