Knitted open-tubular reactors

Figure 8.39 Comparison of a straight and knitted open tubular reactor of equal length for preserving column resolution. (Reproduced with permission from ref. 6S6. Copyright Dr Alfred Huethig Publishers).

B. Postcolumn Derivatization Three types of reactors for postcolumn derivatization are used, depending on reaction kinetics. Straight, coiled, and knitted open-tubular reactors are used for fast reactions, whereas packed-bed reactors are used for intermediate kinetics. Segmented-stream reactors are used for slow reactions. The simplest reactors are the open-tubular reactors a T connector is the most common. Pickering44 has described the performance requirements for instrumental components of HPLC postcolumn systems. 

Detector UV 270 following post-column reaction. The column effluent mixed with 2 M NaOH and 0.05% sodium hypochlorite solution pumped at 0.1 mL/min in a 400 x 0.5 mm hollow fiber membrane reactor at 40° and this mixture flowed through a 1400 x 0.3 mm knitted open tubular reactor at 50° to the detector. 

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