Naktuinbouw Authorized Laboratories (NAL) is a system that authorizes company laboratories to perform seed quality testing. The system ensures that your seed laboratory offers and maintains the required levels of reliability.

In cases where liability is at stake, it is essential that a laboratory for seed quality works correctly. NAL takes all the critical points of quality testing of seed into account: sampling prior to testing, the quality assurance system at the laboratory, the expertise of the analysts, the protocols and issuing the results via NAL quality certificates.

NAL authorization is possible for every type of seed quality testing: germination power, moisture content, purity, the determination of usable plants in soil, health, varietal trueness and varietal purity et cetera. This has been chosen to maximize the benefits of NAL authorization.

Naktuinbouw has expertise regarding all aspects of the authorization system: setting up the system, training the analysts, developing and approving the test methods and the corresponding proficiency tests. Our experts monitor registered laboratories via annual audits.


The NAL conditions are based on various directives and criteria. A complete overview of these conditions can be found in NAL conditions.


NAL authorizes your laboratory for the following points:

  • Quality assurance management system
    The laboratory has an adequate and solid quality assurance management system: critical points such as testing and sampling are safeguarded.
  • Trained analysts
    The staff have the qualifications and competencies required to perform the technical tasks professionally and with the necessary expertise.
  • Approved test protocols
    The laboratory performs the quality tests based on testing protocols that have been assessed and approved by Naktuinbouw.
  • Proficiency tests
    The laboratory takes part in the (annual) program of proficiency tests.
  • Communication
    Managed communication of reliable quality information is issued via standard NAL quality certificates.

For more information, please consult our flyer.

NAL Authorized laboratories

CompanyLocationAuthenticated register
Axia Vegetable Seeds B.V.
Axia authenticated register NAL
Bayer Crop Science -NL - Monsanto Holland B.V.
Bayer NL authenticated register NAL
Bayer Seeds SAS
Peyrehorade (France)
Bayer Seeds SAS authenticated register NAL
Bayer Crop Science - US - Seminis Vegetable Seeds Inc.
(a wholly owned subsidiary of Monsanto Company)
Woodland, CA (USA)
Seminis Vegetable Seeds authenticated register NAL
Bejo zaden B.V.
Bejo authenticated register NAL
Enza Zaden Seed Operations B.V.
Enza authenticated register NAL
Germains Seed Technology
Germains authenticated register NAL
Hazera Seeds B.V.
Hazera NL authenticated register NAL
Hazera Seeds Ltd.
Berurim (Israël)
Hazera Ltd authenticated register NAL
HM Clause, SA
Portes-lès-Valence (France)
HM Clause Fr authenticated register NAL
HM Clause, Inc
Modesto (USA)
HM Clause USA authenticated register NAL
Incotec Europe B.V
Incotec authenticated register NAL
Nunhems Netherlands NL B.V.
Nunhems NL authenticated register NAL
Nunhems USA
Parma/Brooks (USA)
Nunhems usa authenticated register NAL
Nunhems India Private Limited
Hyderabad, Telangana (India)
Nunhems India Ltd authenticated register NAL
Rijk Zwaan Production B.V.
De Lier
Rijk Zwaan authenticated register NAL
Sakata Vegetables Europe S.A.S.
Uchaud (France)
Sakata SAS authenticated register NAL
Syngenta Seeds B.V.
Syngenta NL authenticated register NAL
Takii Europe B.V.
De Kwakel
Takii authenticated register NAL
Vilmorin-Mikado S.A.S.La Menitre (France)Vilmorin authenticated register NAL


The Naktuinbouw board establishes our inspection fees each year. The fees are subsequently approved by the Minister of Agriculture, Nature and Food Quality. The costs are charged based on the cost-maker cost-bearer principle. The fees for inspection can be found here Rates/fees.


Would you like to apply for authorization for your laboratory, or would you like more information about our authorization system? Please contact Bureau Authorization (see below).


Bureau Authorization
+31 71 332 61 90 | Team Authorization