prov:value
| - Gel permeation chromatography is described, for example, in Bannister et al, Analytical Chemistry, Vol. 26, No. 9, 1954, pp. 1451-1454.In brief the technique comprises passing a solution of polyester in a suitable solvent, such as N,N-dimethylformamide, through a tower packed with a molecular sieve type of absorption material.
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