### Determination of the molecular weight of

For fractionated samples of polyacrylamide in water at 30°, the equation [η] ml/g = 6.5 × 10 −3 M n 0.82 is applicable for the molecular weight range 4 × 10 4 to 127 × 10 4. This equation is very similar to the equation [η] ml/g = 6.31 × 10 −3 M 0.80 of Scholtan.

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