Table 4.

Drug contents and pH values of NAC formulations.

	B1	B2	B3	B4	B5	B6
Drug contents	9.99 ± 0.42	10.01 ± 0.22	10.03 ± 0.41	10.05 ± 0.31	10.09 ± 0.19	10.12 ± 0.23
pH values	6.41 ± 0.07	7.42 ± 0.05	5.89 ± 0.05	5.83 ± 0.09	6.87 ± 0.10	4.83 ± 0.06
	PF1	PF2	PF3	PF4	PF5	PF6	PF7	PF8	PF9	PF10
Drug contents	10.03 ± 0.41	–	–	–	–	9.99 ± 0.10	10.06 ± 0.21	10.02 ± 0.11	9.98 ± 0.23	10.22 ± 0.13
pH values	5.83 ± 0.09	–	–	–	–	5.53 ± 0.12	5.04 ± 0.10	5.46 ± 0.07	5.35 ± 0.11	4.58 ± 0.08
	CF1	CF2	CF3	CF4	CF5	AF	NF1	NF2	NF3	NF4
Drug contents	10.02 ± 0.20	9.98 ± 0.09	9.98 ± 0.13	9.95 ± 0.32	9.98 ± 0.21	10.10 ± 0.32	10.19 ± 0.21	10.02 ± 0.21	10.09 ± 0.13	10.01 ± 0.09
pH values	5.91 ± 0.08	5.92 ± 0.09	5.84 ± 0.11	9.87 ± 0.15	5.97 ± 0.11	5.78 ± 0.15	5.98 ± 0.08	5.93 ± 0.11	6.12 ± 0.15	5.96 ± 0.08