Standard for GC: A Practical Guide
“Standard for GC” (often shown as for GC, GC grade, or analytical standard, for GC) is a supplier-defined quality grade for neat chemicals or ready-to-use solutions that are intended for gas chromatography workflows. The grade ensures very low background on common GC detectors (FID, ECD, MS), ...
危险品化学品经营许可证（带存储）