Tubing and Fittings

Bell and socket, smooth-flow type tubing and fittings should be used throughout the system. 

Camphor Quinone Monotosylhydrazone To 22 g (0.133 mole of camphor quinone in 150 ml of chloroform is added 26.1 g (0.14 mole) of p-toluenesulfonylhydrazide in one batch. The reaction vessel is protected with a drying tube and fitted with a magnetic stirrer, and the mixture is stirred at room temperature for 24 hours. The monotosyl-hydrazone is not isolated. 

This table is split into two tables by usage Table IX-3 A, Basic Quality Factors for Longitudinal Weld Joints in Pipes, Tubes, and Fittings, Ey and Table IX-3B, Longitudinal Joints Factors for Pipeline Materials. 

Pump tubing Cut 1 m of Marprene tubing, and fit a male adapter MTLI 250 into each end. Loosely attach plug R94 to each MTLI 250 for additional protection during manipulation Prepare several of these, since one is used for each hollow-fiber production unit and for the filtration circuit. 

Finally, the safety of UFIPTC must also be considered. Rupture or failure of seals, tubing, and fittings can present a potential danger to the user. With proper instrument design and normal safety precautions, however, UHPLC can be safe to use [38]. This is especially true of commercial instruments, which are no more dangerous than any other HPTC. 

Containment of Materials. All experimental work with hexafluorides was carried out in a metal manifold constructed of nickel tubing and fittings which could be evacuated by both mechanical and diffusion pumps. The manifold incorporated Monel diaphragm valves and a number of 1 in. diameter valves with brass bodies. Monel bellows, and Teflon seats. The hexafluorides were transferred between vessels in the manifold by vacuum distillation at room temperature. 

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