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N-亚硝基二正丙胺
48种农残混标(定制)
烯丙基氯[1,3-双(2,6-二异丙基苯基)-2-咪唑烷亚基]钯(II)
2,3,5,6-Tetrafluorobenzotrifluoride
MOS-HYPERSIL-2 5UM 125X4.6MM COLUMN
Dibenzo(a,h)pyrene,10ng/ul 标准品
FILTERING FLASK 1000ML, PP, FOR VACUUM FILTRATION, NARROW MOUTH, TRANSPARENT, WITH ST-STOPPER 34,5
烧杯,高型,250 ml,有刻度
三叔丁氧基氢化铝锂
玻璃纤维滤纸(Grade GF 8,含粘合剂)