The National Institute of Standards and Technology (NIST, Gaithersburg, Maryland) has published a reference guide to the modern metric system that covers the correct U.S. usage of metric units.
The National Institute of Standards and Technology (NIST, Gaithersburg, Maryland) has published a reference guide to the modern metric system that covers the correct U.S. usage of metric units. "The International System of Units (SI)" describes recent changes in the system since 1998. The publication includes accepted spellings of various units as well as a chapter on units for quantities that describe biological effects and symbols for expressing values for enzyme catalytic activity. The U.S. Omnibus Trade and Competitiveness Act of 1988 designated the metric system as the preferred weights and measures system for U.S. trade and commerce, and U.S. Public Law 110-69 in 2007 replaced the old definition of the metric system with the SI definition.
LCGC’s Year in Review: Highlights in Liquid Chromatography
December 20th 2024This collection of technical articles, interviews, and news pieces delves into the latest innovations in LC methods, including advance in high performance liquid chromatography (HPLC), ultrahigh-pressure liquid chromatography (UHPLC), liquid chromatography–mass spectrometry (LC–MS), and multidimensional LC.
Using LC-MS/MS to Measure Testosterone in Dried Blood Spots
December 19th 2024Testosterone measurements are typically performed using serum or plasma, but this presents several logistical challenges, especially for sample collection, storage, and transport. In a recently published article, Yehudah Gruenstein of the University of Miami explored key insights gained from dried blood spot assay validation for testosterone measurement.