Originally Posted by PR-Giants

Seed squeezing is an important method I used to test seed viability. A bad seed will crush with less pressure than a good seed.

When I sell seeds I always send plenty of extras. Extra seeds give members the opportunity to crack a few open to see what the inside of a good seed looks like, this will help to later identify what bad seeds look like.
Agar io
Yesterday I harvested seeds from some variegated Tani fruit. All the seeds immediately sank when placed in water, a good sign but not that important. Next, to check for leaky plugs, I let the seeds dry for about 12 hours and then placed them back in water and they all floated initially but eventually all sank after a few hours. Then I applied pressure to each seed and they crushed with less pressure than what it would take to crush good seeds of other varieties. All seeds were bad and failed visual inspection for viability. I've learned it's quicker to skip the water test and just do the pressure test, especially with Tani.