2.1.2. Standards

Lufenuron (purity: 100%), the pesticide standard, was provided by the Institute of Kemidas (Gyeonggi-do, Gunpo-si, South Korea). The purities of the nine pesticide standards (azoxystrobin, chlorantraniliprole, chlorfenapyr, diniconazole, fludioxonil, imidacloprid, indoxacarb, pyraclostrobin, and thiamethoxam) ranged from 98 to 100%; these standards were obtained from Accustandard (New Haven, CT, USA).
