Instructions for submitting samples

General instructions for submitting samples

• The material must be packaged in plastic and the packaging must be sealed properly.
• Send the sample in a sturdy box. Secure the packing list to the outside of the box.
• Liquid samples must be submitted in vapour-tight packaging.
• If you state on your shipment that it is URGENT and has to be given priority, the sample will be prepared and tested as soon as possible. The rate for urgent assignments will apply.

Additional instructions

Sending seed

• Please submit at least twice the amount of seed required for Naktuinbouw certification testing, so that no delays will occur if the test has to be repeated.
• Since the reliability of health tests may be affected if seed has been treated, untreated seed samples should preferably be submitted.
• If seed has been disinfected, please inform us accordingly.

Submitting material for diagnostic testing

• Package roots and leaves such that leaves cannot be polluted by soil, e.g. by wrapping the roots in a separate plastic bag and sealing it with a rubber band around the stem.
• Good diagnosis requires healthy material to be sent as a reference along with the material affected by disease.
• Send a whole plant if possible. Leaf symptoms may be caused by root problems.
• The submission form for diagnostic assignments can be found on the website or can be requested from the Naktuinbouw Laboratories Administration Department.

Submitting material to make it free from viruses

• Special conditions apply to the submission of material which has to be made free from viruses.
  You can request them from the Naktuinbouw Test Centre in Horst or by phone on +31 (0) 77 398 59 19.

Contacting Naktuinbouw Laboratories
You can contact the Laboratory Administration Department directly for any questions and assignments.
Tel. +31 (0) 71 332 61 56
Fax +31 (0) 71 332 63 69
e-mail Laboratory 

Shipping address for all samples
Naktuinbouw
attn. Administratie Laboratoria
P.O. Box 40
2370 AA Roelofarendsveen,
The Netherlands

Delivery address for courier services
Naktuinbouw
attn. Administratie Laboratoria
Sotaweg 22
2371 GD Roelofarendsveen,
The Netherlands

Floricultural, arboricultural, vegetable crops account executive
Mrs. I. (Irma) Lukassen
Tel. +31 (0) 71 332 62 26
Fax +31 (0) 71 332 63 69
e-mail I.Lukassen 

If you have any specific laboratory questions regarding diseases in fruit crops, arboricultural crops or strawberries:
Test Centre Horst
Tel. +31 (0) 77 398 59 19
Fax +31 (0) 77 398 34 33
e-mail H.Konings