Machinery & Equipment Co. (M&E) supplies used reactors for mixing, heating, cooling, and controlling chemical reactions under pressure and temperature across chemical, pharmaceutical, biotech, nutraceutical, and specialty materials applications. Inventory includes glass-lined reactors, stainless steel reactors, single-use bioreactors, continuous reactors, jacketed and agitated vessels, pressure reactors, vacuum-rated systems, and fermenters constructed from glass-lined steel, 304/316 stainless steel, carbon steel, duplex alloys, Hastelloy, Inconel, Monel, and other specialty materials for corrosion resistance and demanding process environments. Common manufacturers include Pfaudler, De Dietrich, Feldmeier, Lee Industries, CE Howard, DCI, Precision Stainless, Pall Life Sciences, Thermo Fisher, Thermo Scientific, and Equipromex, along with globally recognized OEMs such as Büchi, Parr Instrument, SPX Flow (APV), GEA Group, Sartorius Stedim, Ekato, Sulzer Chemtech, Chemglass, Ace Glass, Alloy Products, and other leading reactor and process system manufacturers. These vessels are widely used for batch and continuous reactions, crystallization, blending, fermentation, polymerization, solvent recovery, and temperature-sensitive processing, with configurations that may include jackets, internal coils, high-efficiency agitation systems, and pressure or full vacuum ratings. Whether you need a lab-scale reactor, pilot system, glass-lined pharmaceutical vessel, or large-scale production reactor, M&E can help match the right used equipment to your process requirements, material compatibility, pressure ratings, and capacity needs.