Fargeinnhold

Fargeinnhold is a Norwegian term that refers to the amount or proportion of color present in a material, product or substance. It is commonly used in industries where color quality is critical, such as textiles, paints, cosmetics, food and pharmaceuticals. The color of a product is a measurable property that can be expressed in several ways, including chromaticity coordinates, colorimetric values, and spectral power distributions. In analytical practice fargeinnhold is determined by converting a measured color signal into a numerical value that indicates the concentration of the colorant or the extent of chromatic change.

Measurement techniques for fargeinnhold include spectrophotometry, where a sample is illuminated and the reflected or transmitted light is measured across the visible spectrum. Colorimeters give CIE L*, a*, b* values, while densitometers measure optical density. In pigment analysis chromatography or mass spectrometry may be used to quantify individual chromophores. In food and cosmetics, routine tests may employ the Hunter Lab method or the Satiscope. Standard reference materials and certified color charts provide a baseline to compare measured values.

The significance of fargeinnhold extends beyond aesthetics. In textiles it influences dye stability and wash durability. Paint formulations rely on accurate color matching to ensure product consistency. Food safety regulations require control of natural and artificial colorants to avoid consumer deception. In pharmaceuticals, color can be an indicator of potency or contamination. Accordingly, many regulatory bodies, such as the EU’s REACH and the US Food and Drug Administration, set limits or require documentation of fargeinnhold for certain products. Accurate assessment of fargeinnhold ensures product quality, consumer confidence and compliance with legal standards.