Table I.

Operative Conditions, Viscosity at Nozzle, and Mean Diameter of Beads Manufactured by Prilling

	Sodium alginate solution (%, w/w)	Flow rate (ml/min)	Viscosity at nozzle (m Pas)	Frequency of vibration (Hz)	Mean diameter (µm)
Ketoprofen/Polymer
1:10	0.50	15	24 ± 0.9	250	745 ± 19
1:5		15	26 ± 1.2	250	748 ± 21
1:3		15	27 ± 1.1	250	753 ± 21
1:10	1.50	18	73 ± 2.6	250	742 ± 25
1:5		18	75 ± 2.4	250	749 ± 26
1:3		18	76 ± 2.4	250	751 ± 19
1:10	2.50	15	356 ± 9.5	280	748 ± 36
1:5		15	358 ± 9.9	280	754 ± 33
1:3		15	362 ± 9.8	280	751 ± 36
Ketoprofen lysinate/Polymer
1:10	0.5	15	29 ± 1.3	250	746 ± 29
1:5		20	36 ± 1.8	250	755 ± 32
1:3		20	49 ± 1.6	250	752 ± 31
1:2		20	85 ± 2.6	250	751 ± 28
1:1		20	118 ± 3.4	250	748 ± 32
1:10	1.50	20	74 ± 2.8	250	752 ± 23
1:5		20	126 ± 4.3	250	754 ± 28
1:3		18	180 ± 4.8	250	756 ± 25
1:2		15	250 ± 6.6	270	749 ± 42
1:1		15	395 ± 8.4	290	754 ± 43
1:10	2.50	15	370 ± 7.9	280	748 ± 41
1:5		15	446 ± 9.3	300	749 ± 46
1:3		15	575 ± 9.9	320	752 ± 43
1:2		18	768 ± 12.3	380	755 ± 50
1:1		15	986 ± 15.9	450	756 ± 52

Each point represents the mean ± SD (n = 3)