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Cole-Parmer 21-3S Fiberglass Tape with PTFE Coating, 2" W, 5 mil thick; 18 yd/Roll
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1,2,3,4-环丁烷四甲酸二酐 (升华提纯),4415-87-6,>98.0%(T)
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正十三烷 reference substance for gas chromatography
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正十七烷 reference substance for gas chromatography
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正十六烷 reference substance for gas chromatography
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正十五烷 reference substance for gas chromatography
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正十四烷 reference substance for gas chromatography
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正十二烷 reference substance for gas chromatography
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正十一烷 reference substance for gas chromatography
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D-樟脑 reference substance for gas chromatography
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