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Organophosphorous Pesticides Mixture #4 - 622 1000ug/ml in Hexane
First Standard® 甲醇中24 种磺胺类兽药混标溶液,100μg/mL
Metoprolol (free base)
苯嘧磺草胺
N-Methyl-o-phenylenediamine dihydrochloride (无证书)
HEXACHLOROETHANE 标准品
PCB No. 56,certified 标准品
氯甲磷 BePure-21109YA
甲醇中虫酰肼溶液标准样品
Mitochondrial DNA Sequencing