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D5-3-氯-1,2-丙二醇溶液,100ppm
8种有机氯农药混标 BePure-31762XH
PUNYW25223455 Picaridin Related Compound 3 (Butan-2-yl Carbonochloridate)
39种农残混标b组(GB/T20769
阿莫西林-d4(major)
Cinosulfuron
First Standard® 甲醇中环丙腈津溶液, 100ug/ml
icpms混标4
First Standard® 甲醇中11种β-兴奋剂混标溶液(GB/T 22286-2008),100μg/mL
水质标样-砷 标准值34.8ug/l