Professional Seed Testing Services with Friendly Support and Consultation. Please call 805-564-2155 for assistance.

AMM Seed Testing, Inc. is a commercial seed testing laboratory that has been serving the seed industry since 1955.  We conduct tests required to label seed lots for sale and shipment domestically, as well as internationally.  Our specialties include seed viability, purity, vigor, and TZ tests, for vegetables, flowers, herbs, and assorted agricultural crops.


Registered Member

Society of Commercial Seed
Technologists (SCST)


Associate Member

International Seed Testing Association (ISTA)



CA Seed Association



Pacific Seed Association


Services Provided

Germination Test, Viability

The laboratory germination test determines the germination potential of a seed…

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Purity Test, Noxious Weed Examination

The purity test is a visual examination of a seed sample for…

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Seed Dormancy

In some cases, viable seeds will not germinate when…

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TZ (Tetrazolium) Test

The TZ test is a biochemical test which quickly assesses the viability…

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Emergence Count

The emergence count is an assessment of seeds which…

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Vigor Tests

While standard germination testing determines the maximum germination potential…

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Moisture Test

The moisture test determines seed moisture content. Seed moisture…

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Seed Count

A seed count calculates the approximate number of seeds…

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Pre-Mill Germination Test

The pre-mill germination test is conducted on seed that…

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