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.
Pure Live Seed Calculations - Single Variety. Pure Live Seed (PLS) is simple to calculate using the information provided on the analysis tag. attached to each bag of seed sold in Maryland. To calculate PLS you need to know the. percentage of pure seed and the percentage germination. For example, a 50 lb. bag of Inferno Tall Fescue has a pure seed of 98.16% with a germination of. 88%.