Uniform Chitosan Microparticles Prepared by a Novel Spray-Drying Technique

Table 1

pH and conductivity of chitosan solutions at different storage times.

Storage time (day)	pH			Conductivity (mS/cm)
	0.5 wt%	1.0 wt%	1.5 wt%	0.5 wt%	1.0 wt%	1.5 wt%
0	2.99	3.44	3.69	1.11	1.74	2.25
3	3.02	3.43	3.62	1.11	1.75	2.27
6	2.96	3.31	3.52	1.12	1.74	2.24
9	3.05	3.45	3.66	1.11	1.75	2.26
18	3.10	3.44	3.69	1.12	1.75	2.27