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2-Ethylhexyl-4-aminobenzoate

BQC2310147409H 土壤中水溶性氟和总氟质控样高浓度

EPA Method 521 Surrogate Standard Stock Solution,1000 μg/mL in Methylene chloride

PAH Mixture 932 200 µg/mL in Dichloromethane

Eicosamethylcyclodecasiloxane

Quizalofop-P-tefuryl

Pyroxasulfone metabolite M-28

Ciprofloxacin Formamide (N-Formylciprofloxacin)

Phenanthrene-d10

Esmolol Impurity 15

VOC Mixture 217 15-1000 µg/mL in Triacetin

9 10 11 12 13 14 15 16 17 18