Food Colouring and Dye Testing

Food colourings and water soluble artificial dyes are widely used across the UK and EU food and drink industry to enhance appearance and ensure visual consistency. These additives are strictly regulated; food business operators are responsible for ensuring that any colours used are authorised for the intended application, do not exceed maximum permitted levels and are correctly labelled.

Eurofins Food Testing UK Ltd., in partnership with Eurofins' global network of laboratories and competence centres, provides accredited analysis and expert guidance to help you meet regulatory expectations and demonstrate due diligence. Our laboratories offer comprehensive food dye and colouring analysis, supporting manufacturers whether you are launching new products or reviewing an existing range.

As well as testing authorised food colours, we provide targeted screening for prohibited or unauthorised dyes. Unauthorised azo dyes such as Sudan dyes, Rhodamine B and Orange II have no legitimate use in food; they pose health risks and remain strictly prohibited under EU and GB assimilated food law.

What we test

Our food colouring and dye testing services cover a broad range of products, matrices and analytical needs

• Quantitative and qualitative analysis of authorised food colours to verify correct use and concentration

• Screening and confirmation of unauthorised and illegal dyes including Sudan I–IV, Rhodamine B, Orange II, Para Red and related compounds

• Testing of both liquid and solid matrices including beverages, sauces, oils, confectionery, bakery, ready meals and high fat or high starch products

• Assessment of raw materials and ingredients such as spices, seasonings, colour premixes and compound ingredients

• Support for both food and selected feed applications where colourants are used

Methods and capabilities

We have developed validated methods for both liquid and solid matrices across a wide range of textures and compositions, including challenging products with high fat or starch content. Tailored extraction techniques help to ensure accurate results, even for complex foods such as mayonnaise, chocolate and ready meals.

Our laboratories apply advanced analytical techniques for reliable detection and quantification of food colours and dyes

• LC MS/MS and HPLC DAD methods for high sensitivity and specificity

• Low limits of detection and quantification suitable for trace level screening of illegal dyes

• ISO 17025 accredited methods for selected food dye and illegal dye scopes

• Clear, actionable reports to support internal quality systems and external audits

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 consultancy for your quality and regulatory teams including labelling

When to use food colouring and dye testing

Food colouring and dye testing can support your business in a range of situations

• Product development and reformulation for new or updated recipes that use colours

• Verification of compliance for existing product ranges and private label items

• Supplier approval and routine monitoring of high risk raw materials such as spices and imported ingredients

• Investigation of non conformances, consumer complaints or suspected contamination

• Due diligence programmes to support retailer, brand owner or regulatory expectations

Regulatory context in the EU and GB*

European Union (EU)

• Food colours are regulated under  Regulation (EC) No 1333/2008 on food additives

• Commission Regulation (EU) No 231/2012 sets the specifications and purity criteria for authorised food additives, including colours

• Only additives on the EU positive list may be used, and their use must follow conditions such as: permitted food categories, maximum levels, quantum satis (where applicable)

• Labelling requirements apply, including declaration of specific colours and any required warnings

Great Britain (GB)

• These EU regulations continue to apply in GB as assimilated (retained) law following EU Exit

• Enforcement is delivered through national legislation and guidance

• Unauthorised dyes, including certain azo dyes such as Sudan dyes and Rhodamine B, remain prohibited in both the EU and GB

Analytical testing helps businesses verify compliance and demonstrate that reasonable precautions have been taken to manage risk.

To discuss food colouring and dye testing or request a quotation, call us on +44 (0)845 604 6740 or submit an enquiry.

*Regulations are subject to change. For the latest updates relevant to your target market, please contact your local Eurofins laboratory. Our specialists provide tailored support through our horizon scanning and food safety consultancy services.