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DNC-D8/4,4‘-二硝基均二苯脲-d8/1,3-二(4-硝基苯)脲-d8
Working Level Aroclors 1016/1260 with Surrogates 标准品
9,9'-Bianthracene
AOZ 同位素-D4 BePure-20301
4-Ethylchlorobenzoate
腐霉利
12种农残混标 BePure-33430XM-d
氯甲西泮溶液,100ppm
S-玉米赤霉酮
Dichlofenthion Solution in Hexane