Polymer sampling valve, diagram

Figure 4.4.9. Schematic diagram of an isopiestic vapor sorption apparatus using an electronic microbalance PC - personal computer, MB - microbalance, WBl-3 - water bath thermostats with T3>T2>Ti, Vl-3 - valves, WM - W-tube mercury manometer, S - polymer sample/solution, SV - solvent reservoir, MS -magnetic stirrer, CT - cold trap, VP - vacuum pump. [Reprinted with permissitm from Ref. 92, Copyright 1998, American Chemical Society].

Figure 5.7 A schematic diagram of the online coupling of liquid-liquid extraction with GC. O, 50 ml glass syringe with extraction solvent, flow rate 138 t,lmin S, 50 ml glass syringe with sample, flow rate 1430 xl min PI, phase segmentor E, polymer-coated glass extraction coil (5 m x 0.7 mm id) P2, phase separator with Teflon membrane, 0.2 xm pore size W, waste V, rotary valve with variable loop (load position) C, carrier gas inlet GC, gas chromatography [1 ].

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