Some people with chest pain have normal or minimal narrowing of heart arteries; in these patients, vasospasm is a more likely cause for the pain, sometimes in the context of Prinzmetal's angina and syndrome X.
You are here. Pure Live Seed. Pure live seed (PLS) is a measure used by the seed industry to describe the percentage of a quantity of seed that will germinate. PLS is obtained by multiplying the purity percentage by the percentage of total viable seed, then dividing by 100.
Bulk vs. Pure Live Seed (PLS) Ernst Conservation Seeds conditions and prepares seed to the highest standard and sells it in bulk or pure live seed (PLS) quantities. PLS refers to the amount of live, viable seed in a lot of bulk seed. In other words, it indicates the amount of seed in the lot that is capable of developing into seedlings.