Pesticides in Tomato Purée Proficiency Test

Start date

Product Code

Proficiency Test



Tomato Purée


Ethephon, 2,4-DB, ETU, Fenbutatin oxide, Haloxyfop (free acid), Maleic Hydrazide, MPPA, Phosphonic acid, PTU, Quizalofop (free acid)

Approx. Size

100 g


Test has shortened timescale for analysis and/or returning results

Tomatoes are widely consumed across the globe and are key ingredients in many cuisines all over the world. This ensures high demand year-round which can challenge suppliers to satisfy profitably. Tomatoes suffer a range of pests and diseases which especially need to be controlled in enclosed growing environments such as glass houses, used extensively in northern latitudes.  A wide range of plant protection products may be applied to tomatoes at all stages of plant growth as well as post-harvest protection.  As a result, tomatoes are annually included in government monitoring schemes due to the high frequency of residues detections.

This proficiency test is specifically for a range of pesticide residues that are generally determined using specific single-residue methods.  The majority of pesticide residues are determined using multi-residue methods, that is ones in which potentially hundreds of compounds can be measured with a single extraction protocol and instrumental method, based on multi-stage mass spectrometry.  However, some pesticides are not very amenable to the generic multi-residue approach and still require more specific extraction regimes and chromatographic-mass spectrometric approaches.  This one PT has a fixed list of such pesticides for determination by single residue methods.  Not all the pesticide residues need to be determined.

Fapas proficiency tests can form the basis from which to ensure your effective testing practices offered continue to meet the expectations of your customers and regulators alike. Fapas proficiency testing activities make use of real food matrices to provide useful insights into your current routine testing practices. This proficiency test can provide a benchmark from which to measure return on investment from your quality assurance efforts.