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.
Norpro: 14,099 seeds per pound x .9 (90% germination) = 12690 pure live seeds per pound. 1,500,000 divided by 12690 = 118 pounds of seed needed per acre or nearly two bushels. Keene: 18,160 seeds per pound x .95 (95% germination) = 17,252 pure live seeds per pound.