🌿From Sanitation to Residues: A Comprehensive PT for Biocides, Chlorates, and Perchlorates in Lettuce

Attention to food safety and the correct management of chemical residues is a priority today. To meet this need, Test Veritas is launching a Proficiency Test (PT) for 2026 dedicated to the simultaneous determination of Biocides, Chlorates, and Perchlorates in Lettuce. This combined approach is essential for verifying the entire analytical quality chain and ensuring full regulatory compliance.

🔍 Why Biocides, Chlorates, and Perchlorates together?

The joint analysis of these three compound families is not random but reflects real-world sanitization and food transformation processes:

• Biocides (e.g., Hypochlorites): Used for disinfecting water and surfaces.
• Chlorates and Perchlorates: Generated as inevitable degradation by-products from the use of chlorine-based biocides.

Their joint presence in plant products (like lettuce) is a direct indicator of the effectiveness or excess of disinfection treatments. Including them in a single PT offers laboratories a more realistic and comprehensive assessment, perfectly aligned with current regulatory and analytical challenges.

Advantages of the Combined PT

• Integrated Analytical Vision
  Simultaneous analysis of parameters chemically and legally linked.
• Operational Efficiency
  A single matrix for three compound families reduces time, costs, and complexity of participation.
• Realism and Representativeness
  Results reflect real operational situations, with multiple and interconnected contaminations.
• High Quality Standard
  Final Report compliant with ISO 13528 (z-score and complete comparative assessments), essential for obtaining accreditation and passing audits.

• Deadline for online orders: September 1st 2026
• Shipping date: October 19th 2026
• Results Submission Deadline: November 23rd 2026
• Matrix: Lettuce, 90g x 1 sample. To ensure greater material stability, it will be provided in lyophilized form, to be reconstituted before proceeding with analysis.
• Molecules under study:
  • Biocides: BAC10, BAC12, BAC14, BAC16, DDAC (Didecyldimethylammonium Chloride). All the molecules will be present!
  • Chlorates and Perchlorates: sodium chlorate, potassium perchlorate. All the molecules will be present!
• Indicative concentrations:
  • Biocides: <300ppb
  • Chlorates and Perchlorates: <0,5ppm
• Price and Convenience: The cost for participation is only €285.00! There is also the option to purchase partial participations at a reduced price, should your interest be limited to only some of the analyte families under study.
• Double the convenience! For all PTs that are part of Progetto Trieste, you can submit 2 sets of results: with a single registration, you can receive an evaluation for 2 laboratory technicians or 2 different techniques in the Final Report.

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🎯 Why Participate?

It’s not just a test; it’s a guarantee of reliability.

Participating in the Test Veritas combined PT is the strategic opportunity to:

1. Confirm the quality of your laboratory results and full compliance with the highest European standards.
2. Demonstrate technical competence and analytical reliability on a crucial topic for the agrifood supply chain.

Contact our sales team today (info@testveritas) for more details! You can already proceed with registration for PT VF6806 on our e-commerce platform!