One-day service
Purity
What's really in the bag? A purity test separates a sample into pure seed, other crop seed, weed seed, and inert matter, and reports each by weight. It's the number on every seed label.
Seed testing · Avondale Estates, Georgia
Know your seed before it goes in the ground.
Registered seed technologists testing purity, germination, and viability for the seed industry since 1951. One-day service on purity and TZ tests.
time tested growth
1951Serving the seed industry since
1 dayService on purity and TZ tests
3 rule setsAOSA, ISTA, and Canadian
GCIAApproved laboratory, 2026
What we test
Three questions every seed lot has to answer.
What's really in the bag, how much of it will grow, and is it still alive. Our tests answer each one, so seed companies and growers can label and plant with confidence.
Grown out by the rules
Germination
How much of it will grow? Seeds are grown under controlled conditions for the period the rules set for each species, then counted for normal seedlings. The result is the germination percentage on the tag.
One-day service
Tetrazolium (TZ)
Is it still alive? A TZ test stains living seed tissue red, so an analyst can read viability without waiting for seeds to sprout. It's the fast answer when you can't wait for a full germination.
AOSA rules
The Association of Official Seed Analysts rules used for seed sold in the United States.
ISTA rules
The International Seed Testing Association rules used for seed in international trade.
Canadian rules
Canada's methods for testing seed headed across the northern border.
How it works
From your envelope to your answer.
- 01Send your sampleMail it to P.O. Box 132, Decatur, Georgia, with the species and the tests you need.
- 02We test itRegistered seed technologists run your tests to AOSA, ISTA, or Canadian rules, whichever your market needs.
- 03You get your resultsPurity and TZ results in one day. Germination results when the species' test period is complete.
Meet our founder
Jake Hulsey
In 1944, Georgia passed a law to regulate the quality of seed sold in the state, and an agronomist named Jake Hulsey came to Atlanta to build its "Good Seed Program." In 1951 he opened his own lab. It's still testing today.
"…when those seed had been tested by Hulsey that they were right."Jack Dickey, Dickey Seed Company
Contact
Have a lot to test? Send it our way.
Mail samples to
P.O. Box 132Decatur, GA 30031-0132
The lab
105 N Clarendon AveAvondale Estates, GA 30002