Water in a closed jar with an air space over it forms a two phase system.
2.
It is a two phase system.
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The electrostatic theory assumes just a two phase system, with dielectric particles forming chains aligned with an electric field in an analogous way to how magnetorheological fluid ( MR ) fluids work.
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It also makes it possible to produce a rotating magnetic field in an electric motor and generate other phase arrangements using transformers ( for instance, a two phase system using a Scott-T transformer ).
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The simple and commonly adopted batch process involves the mixing of reagents together in a suitable buffer solution, preferably at a temperature between 4 and 6 �C, followed by the separation and purification of the desired product using a suitable technique based on its physicochemical properties, including size exclusion chromatography ( SEC ), ion exchange chromatography ( IEX ), hydrophobic interaction chromatography ( HIC ) and membranes or aqueous two phase systems.