Tips & Tricks: GPC/SEC Viscometry - A Versatile Tool for Structure Determination and More
In comparison to other GPC/SEC detectors such as light-scattering detectors or UV detectors, viscometers need more care. It takes a longer time to get a stable baseline after changing from one solvent to another and the quality of the LC components plays an important role. Nevertheless, a viscometer is worth these efforts as it provides unique information that is not available with any other detector.
In comparison to other GPC/SEC detectors such as light-scattering detectors or UV detectors, viscometers need more care. It takes a longer time to get a stable baseline after changing from one solvent to another and the quality of the LC components plays an important role. Nevertheless, a viscometer is worth these efforts as it provides unique information that is not available with any other detector.
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.
