Pesticide Residue Grade (PRA) Reagents: Definition, QC Testing, and Selection Guide
“Pesticide residue grade” (often labeled for pesticide residue analysis, PRA) refers to solvents and auxiliaries produced and QC-tested specifically to minimize background signals and interferences when measuring trace-level pesticide residues—typically by GC-ECD, GC-MS(/MS), or LC-MS(/MS). In ...
危险品化学品经营许可证（带存储）