The ALVA proficiency test of the Division of Feed, Animal Nutrition and Plant Analysis is an international proficiency test, which is performed once a year. The proficiency test 2025 comprises three samples: Compound feed, a mineral feed and a cereal, which can be ordered optionally. The samples are tested for elements and, in some cases, ingredients.

The goal of the ALVA proficiency test is to provide laboratories with opportunities to:

• to check the accuracy of their procedures
• verify the technical expertise of their personnel
• verify the functionality of their laboratory equipment
• test the suitability of methods for different matrices
• meet the requirement of the accreditation bodies to participate in proficiency testing.

The organization and performance of this proficiency testing is based on EN ISO 17043.

Registration / Timing

Registration is done here until February 21, 2025 at the latest, you can also find more information under this link.

The samples will be sent in March 2025.

The results submission has to be done by June 6, 2025.

The results report will be sent out at the end of August 2025.

Participation fee

110 € per sample (excl. VAT) plus shipping costs (Europe up to 4 samples: 30 €, > 4 samples: 50 € ; North America und Asia up to 4 samples 55 €, > 4 samples 90 € ; Australia und New Zeeland: up to 4 samples 80 €, > 4 samples 130 €). For quality assurance purposes, additional material can be ordered while stocks last (80 € per sample). After registration you will receive an invoice (beginning of March 2025).

Scope of analysis/methods

A list of parameters to be analyzed (ingredients, mineral and trace elements, heavy metals) is sent with the samples, but not all of them have to be analyzed obligatorily. The methods of analysis are not mandatory, but should be indicated for better interpretability of the results (the method is indicated in the report). The results are to be given as mean values based on dry matter.

Statistical evaluation

The evaluation is carried out according to DIN 13528 and includes the determination of mean value, median, standard deviation, coefficient of variation and indication of the z-score and recovery rate related to the mean value. The report of results will be submitted electronically. Results are anonymous and confidential and may not be shared or published without ALVA consent.

Result evaluation

Each participating laboratory will receive a certificate of participation, as well as a representation of success (number of outliers) and an individual report of the results and the overall report of the proficiency test in English.