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元素标液2
Chloroparaffin C10-C13 Mix 6 in n-Heptane标准品
Retort clamp, cast iron green lacquered, length 150 mm, opening up to ? 25 mm, with round jaws, cork lined
气进样针
8515 N95 经济型焊接用防尘口罩
10ul可更换进样针
试管18*180
氟硼酸钾
Rubber stopper, ?: 42/49mm, 1 bore: 13mm, for use in 1000 ml filtering flask
Polyethylene Glycol Monostearate (4E.O.)