Table 1.

Results obtained from single exponential decay fitting of loading kinetics in water and HBG buffer at pH 4.1 to 8.4. While the loading process is very fast in water, in buffers with defined pH values rates of loading fall with rising pH, and no loading is detectable at pH 7.1 or higher.

pH	Rates of Decay (10–3·s–1) (from Exponential Fit)	Characteristic TIME Scales (s)
Water	13 ± 10	74.5 ±
4.1	10 ± 4	103.6 ±
5.1	10 ± 2	98.5 ±
6.2	6 ± 2	169.9 ±
7.1	-	-
7.4	-	-
8.4	-	-