Freshness and Safety: The Complete Proficiency Test Package for Freshness Parameters 2026

Histamine, Total Volatile Basic Nitrogen (TVBN), and other Biogenic Amines are crucial indicators of spoilage. Accurate analysis of these contaminants not only protects public health (preventing histamine poisoning) but also supports commercial and legal decisions.

For ISO/IEC 17025 accredited laboratories, participation in robust Proficiency Tests (PTs) is a key requirement to demonstrate and maintain technical competence.

While our accredited PT for Histamine in tuna is available annually for constant methodological verification, schemes for all other freshness parameters are offered on a rotation that enriches our catalogue.

2026 is the year of completeness: it is the only chance to access the entire series of PTs on freshness parameters in a single programme. Maximize your laboratory’s demonstration of competence.

• Shipping Date: September 14th 2026
• Test Material: tuna, 2 samples of 50g each. Provided as lyophilized (to be tested after reconstitution).
• Analyte: Histamine
• Indicative concentrations:
  • 60 ppm < High Level < 350 ppm
  • 22 ppm < Low Level < 60 ppm
• The Test Material is incurred;
• Price: Only €320.00 for confirmatory methods and €304.00 for participation with screening methods.

This PT can be associated with the PTs for Total Volatile Basic Nitrogen (T5401) and Biogenic Amines in tuna (T6401) at a very convenient price!

• Shipping Date: March 16th 2026
• Test Material: tuna, 1 sample of 50g. Provided as lyophilized (to be tested after reconstitution).
• Analyte: Total Volatile Basic Nitrogen
• Indicative concentrations: < 400 mg/100g
• The Test Material is incurred;
• Price: only 250,00€.

• Shipping Date: September 14th 2026
• Test Material: tuna, 1 sample of 50g. Provided as lyophilized (to be tested after reconstitution).
• Analytes: cadaverine, putrescine, spermidine, spermine, tyramine
• Indicative concentrations: <500ppm
• The Test Material will be spiked/incurred;
• Price: only 385,00€.

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TRIPLE COVERAGE, MAXIMUM SAVINGS: Full Freshness Package with 20% OFF on Each PT!

Take advantage of our offer on the Freshness Parameters line! The simultaneous purchase of PTs T5401, T6400, and T6401 grants a 20% reduction on the list price of each individual test.

This is the easiest and most economical way to demonstrate complete competence in Freshness Parameter analysis. Do not miss this opportunity for comprehensive analytical validation at an unbeatable price! Contact us to receive your DISCOUNT CODE!

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DID YOU KNOW?
OUR STRENGHTS FOR THESE PTs

• Convenient participation fee: For histamine we provide 2 Test Materials at different concentration level (High Level and Low Level) with only 1 subscription.
• With us the convenience doubles! For all the PTs that are part of Progetto Trieste it is possible to submit 2 sets of results: with just one subscription you can receive in the Final Report the evaluation of 2 laboratory technicians, or 2 different techniques. For histamine you will receive 2 different Test Materials, so you will be able to submit up to 4 results!
• More reliable assigned value due to more stability of Test Materials. Most of them are provided as lyophilized (to be tested after reconstitution). In this way, regardless of the provenience of the laboratory, every participant can be sure to receive the Test Material in the same conditions. Once reconstituted it is the same as in your routine!
• The Test Materials for Histamine will be incurred, the laboratory must prefer incurred Test Materials instead of spiked ones, because only with naturally contaminated samples the extractive capability of the method can be taken into account. For Biogenic amines too the Tets Material could be incurred.
• Separate evaluation data for screening and confirmatory methods, with the assigned value deriving only from quantitative confirmatory results. This feature of our PTs respects the requirement of UNI CEI EN ISO/IEC 17043:2010 to use fit-for-purpose methods of evaluation, makes the assigned value more reliable and the assessment more valid. Even if you are using a screening method, the PT simulates what you would do in the routine (comparing your results with confirmatory ones). The semi-quantitative (< or >) and qualitative screening results receive evaluations provided with dedicated criteria. The quantitative screening and confirmatory results are evaluated through z-score.