Table 4. Determination of formulations pH after preparation of formulations F₄-F₆ .

Time	pH (mean ± SD)
	F4	F5	F6
24 h after	4.43 ± 0.01	4.50 ± 0.02	4.56 ± 0.00
48 h after	4.40 ± 0.00	4.60 ± 0.01	4.71 ± 0.02
1 week	4.48 ± 0.00	4.56 ± 0.00	4.67 ± 0.03
2 weeks	4.40 ± 0.00	4.48 ± 0.02	4.74 ± 0.00
1 month	4.33 ± 0.02	4.45 ± 0.02	4.64 ± 0.01
3 months	4.31 ± 0.00	4.55 ± 0.02	4.51 ± 0.01
6 months	4.39 ± 0.02	4.45 ± 0.03	4.59 ± 0.01