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2,3,3',4,5-Pentachloropiphenyl Solution in Methanol (无证书)
Sodium chromate
First Standard® 乙腈中磺胺噻唑溶液, 100μg/mL
Butachlor
SKULLCAP(CHINESE) ROOT RBRM 标准品
正己烷中定制混标48溶液
蒽
n-Hexyl decyl phthalate(Technical)
甲苯/己烷(1:1)中o,p’-DDE溶液
六氯苯