Table 1.

Physical appearance and pH values of formulated hydrogels.

Formulation	Color	Homogeneity *	Consistency °	pH
C1	Transparent	5	3	6.8 ± 0.1
C2	Yellowish	4	5	7.1 ± 0.1
G1	Hazy white	3	3	6.6 ± 0.1
G2	Hazy white	2	3	6.6 ± 0.2
G3	Transparent	5	3	6.7 ± 0.2
G4	Transparent	5	3	6.5 ± 0.1
G5	Hazy yellowish	3	5	6.9 ± 0.0
G6	Hazy yellowish	2	5	7.0 ± 0.1
G7	Yellowish	4	5	6.9 ± 0.2
G8	Yellowish	4	5	6.8 ± 0.0

* Homogeneity: from 1 (nonhomogeneous) to 5 (excellent homogeneity); ° Consistency: from 1 (very low viscosity) to 5 (very high viscosity).