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International Certificates

International Certificates are generally used where seed is being exported, or where a customer requests such a certificate. The Department of Agriculture's Seed Testing Laboratory is accredited to issue International Certificates on behalf of the International Seed Testing Association (ISTA).

The following is a link to ISTA

Our laboratory is accredited to test the following species:

Agrostis canina 
Agrostis capillaris 
Agrostis gigantea 
Agrostis stolonifera 
Allium cepa 
Avena sativa 
Brassica juncea 
Brassica napus 
Brassica napus var. napobrassica 
Brassica nigra 
Brassica oleracea 
Brassica rapa 
Cynosurus cristatus 
Daucus carota 
Festuca arundinacea 
Festuca ovina 
Festuca pratensis 
Festuca rubra 
Hordeum vulgare 
Lactuca sativa 
Linum usitatissimum 
Lolium multiflorum 
Lolium perenne 
Phaseolus vulgaris 
Phleum pratense 
Pisum sativum 
Trifolium dubium 
Trifolium pratense 
Trifolium repens 
Triticum aestivum 
Vicia faba 
Secale cereale  
Zea mays 

The Moisture Test

Object of the test

The object is to determine the moisture content of seeds by an oven method for routine use.

General principles

Our laboratory follows International Seed Testing Association rules for moisture testing. The method used is the constant oven method. All samples are tested in duplicate and the average of the two in tolerance duplicates are reported. It is vitally important that any sample submitted for moisture testing is submitted in a moisture proof container.

Test time

Moisture tests are normally given priority and a result is usually available within 2 working days of receipt.

Report issued

The report issued states the percentage moisture found in the submitted sample.

The Fluorescence Test

Object of the test

To distinguish between Lolium multiflorum (Italian ryegrass) and Lolium perenne ( perennial ryegrass).

General principles

Seeds are germinated upright in paper towelling so that their roots are clearly visible. In most varieties of Lolium multiflorum the root traces of the majority of the seedlings show fluorescence under ultra-violet light, whereas in most varieties of Lolium perenne the root traces of the majority of the seedlings do not show fluorescence. The fluorescence test alone, however, is not always a sufficient basis for the identification of a species or a cultivar, because many of the varieties grown  contain a certain number of plants which do not give a typical reaction for that species

Test time

The test time is 14 days from initiation of the test.

Report issued

States the number of seeds which fluoresced.

1000 Seed Weight

The 1000 seed weight test is intended to determine the weight of 1000 pure seeds from the submitted sample.