John Hinshaw offers his insights into how the current helium shortage will affect gas chromatographers and answers some concerns of The Column readers selected from the CHROMacademy Forum.
John Hinshaw offers his insights into how the current helium shortage will affect gas chromatographers and answers some concerns of The Column readers selected from the CHROMacademy Forum.
Understanding FDA Recommendations for N-Nitrosamine Impurity Levels
April 17th 2025We spoke with Josh Hoerner, general manager of Purisys, which specializes in a small volume custom synthesis and specialized controlled substance manufacturing, to gain his perspective on FDA’s recommendations for acceptable intake limits for N-nitrosamine impurities.