Tetrazolim chloride seed testing: The Tetrazolium Chloride (TZ) test is often called the quick germination test. It's a chemical test used to determine seed viability, and results are usually available within 24 to 48 hours.

Why tetrazolium test is done?

The Tetrazolium Test is the classic quick test in that it provides a rapid determination of seed viability. ... This enables us to perform a rapid test for seed viability. Viable seed may be Normal, Abnormal, Hard or Fresh in the Germination Test. Thus the Tetrazolium Test will not detect Abnormal Seedlings or dormancy.

How does a tetrazolium test work?

How is a TZ Test Done? Seeds to be tested are soaked in water overnight. Once imbibed, they're cut in half with a scalpel to expose the embryo. The halved seeds are then put in a tetrazolium chloride solution, and observed for staining.