Mixture
V
NaCl
(ml)
Storage condition
pH
0
Variation of pH (%)
Light
T
t
7
t
15
1
50
L
F
7.39 ± 0.27
-5.7
-5.1
2
L
RT
-6.9
-5.7
3
PL
F
+1.4
+2.1
4
PL
RT
+2.4
+2.5
5
100
L
F
7.32 ± 0.24
-4.9
-5.6
6
L
RT
-6.1
-5.9
7
PL
F
+1.3
-1.1
8
PL
RT
-1.0
-1.0
9
250
L
F
7.16 ± 0.22
-6.7
-7.4
10
L
RT
-7.0
-6.7
11
PL
F
-0.7
-1.1
12
PL
RT
-1.7
-1.3
13
50
L
F
8.94 ± 0.05
-7.9
-8.1
14
L
RT
-9.2
-8.8
15
PL
F
-8.3
-7.9
16
PL
RT
-7.8
-7.9
17
100
L
F
8.89 ± 0.04
-10.3
-10.3
18
L
RT
-10.9
-11.0
19
PL
F
-10.7
-9.6
20
PL
RT
-11.5
-12.6
21
250
L
F
8.55 ± 0.04
-14.2
-16.6
22
L
RT
-16.1
-16.5
23
PL
F
-15.7
-16.1
24
PL
RT
-17.8
-16.6
pH0: mean initial pH ± standard deviation
t
7
: 7 days of storage
t
15
: 15 days of storage
Table 4:
pH
0
and variation of pH of mixtures after 7 and 15 days of storage.
