Grammage Test
The mass per area of the paper is measured as gsm (grams per square meter). Paper sheets are cut to a size of 10 cm x 10 cm, then the sheets are massed individually. The mean of the masses is used to calculate the mass of the paper per square meter, and the standard deviation is determined from all samples. If the mass is higher than specified, it is a loss for the publisher.
Read more about this topic: Paper And Ink Testing
Famous quotes containing the word test:
“[17th-century] Puritans were the first modern parents. Like many of us, they looked on their treatment of children as a test of their own self-control. Their goal was not to simply to ensure the child’s duty to the family, but to help him or her make personal, individual commitments. They were the first authors to state that children must obey God rather than parents, in case of a clear conflict.”
—C. John Sommerville (20th century)