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Bis(cyclohexanone)oxalyldihydrazone,For spectrophotometric determination of copper, ≥99%, 25g
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Bis(cyclohexanone)oxalyldihydrazone,For spectrophotometric determination of copper, ≥99%, 5g
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2，4，6-Tris(2-pyridyl)-s-triazine,For spectrophotometric determination of Fe, ≥99% (HPLC), 1g
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POLY(STYRENE-CO-DIVINYLBENZENE),Cross-linked 1%DVB (100-200 mesh), 25g
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POLY(STYRENE-CO-DIVINYLBENZENE),Cross-linked 1%DVB (100-200 mesh), 100g
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POLY(STYRENE-CO-DIVINYLBENZENE),Cross-linked 1%DVB (100-200 mesh), 500g
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POLY(STYRENE-CO-DIVINYLBENZENE),Cross-linked 1%DVB (100-200 mesh), 5g
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Lithospermic acid B,98%, 25mg
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Lithospermic acid B,98%, 5mg
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Lithospermic acid B,98%, 100mg
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N/400 PVSK Solution,0.0025mol/L, 500ml
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