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丙酮中地虫硫磷溶液 广电计量
Germanium Oxide (GeO2) 99.999%(有证书)
?2-Androstene-1α,17β-diol
Butyltin tirchloride-d9
Carbon as TOC - KHC8H4O4, 99.99%, H2O(有证书)
LEAD WITH ADDED IMPURITIES (trace elements) 标准品
漏芦(祁州漏芦)
Phase VIB - Additions 标准品
1-氟萘溶液,100ppm
羟吡酮 广电计量