The Return Of Sulfur In Skin Care
The anaerobic sample was placed into a syringe equipped with a closed PEEK tubing, removed from the anaerobic chamber and connected to the syringe drive with a flow of five µl min−1. The closed line was opened and immediately connected to tubing from the ultra-performance liquid chromatography pump through a Tee, which was connected to the HESI supply. The line from the ultra-performance liquid chromatography carried 50 mM N2-purged ammonium acetate at a flow price of 50 µl min−1 (total flow into HESI source of 55 µl min−1). For size-exclusion chromatography–MS, a Yarra 1.eight-µm size-exclusion chromatography X150 column was made...