February 8, 2017. The National Institute of Standards and Technology (NIST) is a standards laboratory that is part of the U.S. Department of Commerce. The NIST traceable calibration refers to a program that certifies that the equipment used by labs or manufacturing facilities is properly calibrated according to the industry standards in place.
Quick Answer. VAC is an electrical voltage in an alternating current circuit. The power system supplying homes and businesses in the United States uses AC 120 V, while in Europe the system uses AC 240 V. Continue Reading.
It helps compact the bulk so you can store them more easily. Vacuum-assisted closure (VAC) therapy does a similar thing for wounds and incisions. It removes excess blood and fluid, reduces swelling, and pulls the edges of the wound closer together so it can heal more easily.