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1,6-Dinitropyrene 10 µg/mL in Toluene

300Å SCX 5μm ID4.0mm*300mm

L-Methionine Sulfone

4,4'-Dihydroxybenzophenone

Tramadol N-Oxide

EPA Method 8270 Internal Standard Mixture 2000 µg/mL in Dichloromethane

GNM-SRE-001-2013

BW820577XV-20ML

四氯乙烯中苯水质标液(浓度100ug/ml)

Dextromethorphan N-Oxide Hydrochloride

6种邻苯二甲酸酯类混标 Phthalates Mix-6 1000ug/ml in Methanol

Pesticide mix1 for GB 3838-2002, organophosphorus pesticides, 100 µg/mL in Methanol

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