Metrology Lab's accreditation is a world's first, on a very fine line

The ORNL Metrology Laboratory's Brian Sizemore says he pulled a hair out of his head one day and weighed it. The scale read 210 micrograms.

Keep that figure in mind.

The Metrology Lab recently received accreditation from the National Voluntary Laboratory Accreditation Program in the areas of mass, mass balance, relative humidity and laboratory thermometers. The lab is now accredited to calibrate mass sets and is the world's first such facility that can provide NVLAP-accredited calibrations of analytical balances—of which ORNL has around 350—in the field...Read full story