Analysis of illegal dyes

Unauthorised azo dyes such as Sudan dyes, Rhodamine B or Orange II are sometimes illegally added to enhance the appearance of spices, sauces, or other food products. Eurofins Food & Feed Testing supports you with precise, accredited testing solutions that uncover even trace amounts of illegal dyes.

Key services

  • Screening and confirmation of illegal dyes in food, feed, and raw materials
  • Targeted analysis for Sudan I–IV, Rhodamine B, Orange II, Para Red and others
  • Advanced techniques such as LC-MS/MS and HPLC-DAD for high sensitivity and specificity
  • Low detection limits suitable for complex matrices like spices, sauces, and herbal blends
  • Accredited methods in line with ISO 17025 and CH food safety regulations
  • Fast turnaround times and clear, multilingual reporting
  • Benchmarking against regulatory thresholds and internal quality standards

The analyses are carried out by laboratories within the broader Eurofins network.

Additional services

In addition to our routine testing, we offer a range of complementary services to support your quality assurance measures:

  • Support in sampling strategies and risk-based monitoring plans
  • Supply chain risk assessments and raw material audits
  • Customised method development for specific product types
  • Training and consulting for your quality and regulatory teams

Get in touch

Would you like to find out more about our testing solutions, or do you need tailored analytical support? Contact us today.

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