Yellowness Index

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Yellowness Index is a number calculated from spectrophotometric data that describes the change in colour of a test sample from colourless through to yellow.

The American Standards Test Methods (ASTM) has defined whiteness and yellowness indices. The ASTM's E313 yellowness index is used to determine the degree to which a sample's colour shifts away from an ideal white. The D1925 yellowness index is used for measuring plastics.

Applications

  • Chemicals
  • Coatings
  • Food and Beverage
  • Household Products
  • Plastics
  • Textiles
Title Application Part Number Mark as favourite
Our non-contact spectrophotometer enables colour measurement of powders, gels, liquids, creams and pastes from a distance, in their natural state
  • Coatings | Food and Beverage | Household Products | Medical and Clinical Products | Plastics | Sugar Solutions, Syrups and Honey | Textiles | Waste Water Treatment
400810
Entry-level colour quality control package which works with many of the Lovibond® spectrophotometers
  • Chemicals | Coatings | Household Products | Plastics | Textiles
400590
comprehensive colour quality control package avilable for all Lovibond® spectrophotometers from handheld to benchtop units
  • Chemicals | Coatings | Household Products | Plastics | Textiles
400610
Lovibond® PFXi-195/9 - The industry standard spectrophotometric colorimeter giving accurate results and benefitting from remote calibration
  • Beer, Malts and Caramels | Chemicals | Coatings | Edible Oils and Fats | Food and Beverage | Household Products | Medical and Clinical Products | Petroleum Oils and Waxes | Pharmaceuticals and Cosmetics | Plastics | Sugar Solutions, Syrups and Honey
1371959
RT 250 Spectrophotometer is ideal for the measurement of materials such as paper, plastic, fabric and a variety of hard surfaces
  • Coatings | Food and Beverage | Household Products | Medical and Clinical Products | Plastics
402505
This portable hand-held spectrophotometer allows you to obtain absolute and differential measurements in the lab, plant or field
  • Coatings | Food and Beverage | Household Products | Medical and Clinical Products | Plastics
400300
This portable handheld spectrophotometer is the most convenient way to measure colour, allowing you to obtain accurate measurements in the lab, plant or field
  • Coatings | Food and Beverage | Household Products | Medical and Clinical Products | Plastics
400305
This portable handheld spectrophotometer is the most convenient way to measure colour, allowing you to obtain accurate measurements in the lab, plant or field
  • Coatings | Food and Beverage | Household Products | Medical and Clinical Products | Plastics
400310
Highly flexible and portable spectrophotometer provides the perfect opportunity to measure colour anywhere in your facilities
  • Coatings | Food and Beverage | Household Products | Medical and Clinical Products | Plastics
400320
This cost effective, portable and flexible spectrophotometer featuring sphere technology is perfect for measuring colour on site or in the field
  • Chemicals | Coatings | Food and Beverage | Household Products | Medical and Clinical Products | Pharmaceuticals and Cosmetics | Plastics | Textiles
400400
Portable sphere spectrophotometer with extreme flexibility for multiple applications. An ideal mid-range solution for accurate colour measurement
  • Chemicals | Coatings | Food and Beverage | Household Products | Medical and Clinical Products | Pharmaceuticals and Cosmetics | Plastics | Textiles
400500
Portable sphere spectrophotometer with extreme flexibility for multiple applications. An ideal mid-range solution for accurate colour measurement
  • Chemicals | Coatings | Food and Beverage | Household Products | Medical and Clinical Products | Pharmaceuticals and Cosmetics | Plastics | Textiles
400505
Portable sphere spectrophotometer with extreme flexibility for multiple applications
  • Chemicals | Coatings | Food and Beverage | Household Products | Medical and Clinical Products | Pharmaceuticals and Cosmetics | Plastics | Textiles
400504
Flexible sphere spectrophotometer with switchable 4mm & 8mm aperture. Lightweight and portable, perfect for your colour measurement needs
  • Chemicals | Coatings | Food and Beverage | Household Products | Medical and Clinical Products | Pharmaceuticals and Cosmetics | Plastics | Textiles
400520
Sphere spectrophotometer for larger areas with 14mm aperture. Lightweight and portable, perfect for your colour measurement needs
  • Chemicals | Coatings | Food and Beverage | Household Products | Medical and Clinical Products | Pharmaceuticals and Cosmetics | Plastics | Textiles
400530
Reliable and accurate compact benchtop spectrophotometer ideal for small to medium-sized manufacturers looking to establish accurate colour measurement
  • Chemicals | Coatings | Food and Beverage | Household Products | Medical and Clinical Products | Pharmaceuticals and Cosmetics | Plastics | Textiles
407000
Reliable and accurate compact benchtop spectrophotometer ideal for small to medium-sized manufacturers looking to establish accurate colour measurement
  • Chemicals | Coatings | Food and Beverage | Household Products | Plastics | Textiles
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Applicable Standard ASTM 313
ASTM D1925