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 | Cole-Parmer 230 VAC50/60赫茲 無級變速旋轉(zhuǎn)器 |
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 | Cole-Parmer KIT 3 光譜校準(zhǔn)標(biāo)準(zhǔn)Cole-Parmer Spectroscopy Standards Kit 3, includes 2 pcs, for UV-VIS Photometric Accuracy, absorbance accuracy, and stray light calibration (200-700nm) |
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