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Parr Model 3911 Hydrogenation unit for working volumes of 1 to 200 ml. Ace-thred vessels replace rubber stoppered vessels and eliminate cross-over contamination caused by leeching or sample retension. Modified Vessel Clamp Allows Clamping of Temperature Measurement Adapter to Parr Model 3911 Hydrogenation Units. Nylon Adapter Connects Vessel to Gas Tank Tubing On Smaller #7 Ace-Thred Vessels. PTFE Adapter Connects Vessel to Gas Tank Tubing On The Larger #25 Ace-Thred Vessels. Upper and Lower Bumper Pad Protects Glassware In and Hydrogenation Units.
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