Stopcock parts and components give stopcocks a wider range of uses. Stopcock plug assemblies are also produced to replace parts in existing lab equipment. Plastic replacement stopcock parts and components, when paired with a stopcock, are often used in conjunction with separatory funnels, Schlenk flasks and burettes.
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Use in aqueous solutions and nearly all organic solvents commonly used in liquid chromatography of macromolecules. Cytiva Life Sciences™ O-rings are made of nitrile rubber.