While all of the peaks are not completely resolved, an increase in column length would most likely improve resolution greatly. Initial chromatograms of the same mixture on a column 750 mm long showed celloheptaose and cellohexaose barely distinguishable as separate peaks. Using the same resin in a 1000-mm column gave the chromatogram in Figure 9. All of the cellodextrins except celloheptaose were easily soluble in 0.10M boric acid adjusted to pH 7.0 with sodium hydroxide. Celloheptaose entered solution completely after several hours stirring at about 40°C. Higher homologs