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Amazon.com: CHEM SCIENCE INC CS-C0171120 Condenser, Distillation, 14/20 Joint, 110 mm Jacket Height, Overall Column Height 180 mm with Indentations to Support Packing Material : Industrial & Scientific
ACE Glass 24/40 Double Jacketed Distilling Column Condenser 380mm EL 9mm OD Hose | eBay
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Laboy Glass Fractional Column Vigreux with 19/22 Joints 120mm in Indentation Length Lab Glass Condenser for Apparatus in Organic Chemsitry: Amazon.com: Industrial & Scientific