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4. Some specific characterization problems
In this last paragraph, we very briefly address the problem of determining molar masses in a few specific cases. As shown in figure 11 , almost all analytical methods lead to the determination of the molar mass of substances with a high molar mass (between 10 4 and 10 7 ). Accordingly, a few problems specific to polymers are examined here; these include both synthetic polymers of industrial interest and substances of natural or biological origin (proteins, nucleic acids, etc.).
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Some specific characterization problems
Bibliography
Bibliography
Manufacturers
Vapor pressure meters or vapor pressure osmometers
GONOTEC, GSG-Hof, Reuchlinstrasse 10-11, Berlin, Germany http://www.gonotec.com
KNAUER, Hegauer Weg 38 14163, Berlin, Germany http://www.knauer.net
Ultracentrifugation...
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