On the Mark–Houwink parameters for galactomannans

We have produced a summary plot for a number of published results for the Mark–Houwink parameters for guar and other galactomannans. Agreement between these results, collected over almost 25 years, is very good, and suggests any of the reported parameter sets discussed would be equally valid to other workers. This also implies that any values measured outside the range described should be examined very critically.