Analytical apparatus and instruments and parts and fittings therefor, including liquid chromatography injectors, gas analysors, trace organics concentrators, electron capture detectors, and for valves, structural fittings, injectors, valve actuators, filters, valve sequence programmers, manifolds, temperature controllers, valve programmers, and electronic switching valves; analytical testing or processing apparatus and instruments and parts and fittings therefor, including digital valve interfaces, control modules, selection modules, position indicators, temperature controllers, heated valve and column enclosures, valve sequencers, gas analyzers, programmable microprocessor controllers, programmable microprocessor sequencers, pipe and syringe adaptors, column end fittings and parts for all the aforesaid goods.;
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