2005 Chemical
Measurements-pH
RM
Time
Reading Reading
1
2
Comments How
determined
0
12:00
12:00
1:20
1:50
12:30
11:40
n/a
11:00
12:50
7.5
7.9
7.6
7.0
7.8
7.5
7.5
7.0
7.5
Bottom
Surface
5
2
4
6
13
15
18
19W
7.5
Indicator sol.
Indicator sol.
Litmus paper
Indicator sol.
LaMotte tabs
19E
25
41
59
2:19
10:45
11:45
12:30
12:30
5
7
8
7.4
8.0
7.7
7.0
6.5
61 NL
61 B
76
85
n/a
12:41
11:00
9:39
10:10
10:45
12:10
12:45
9:40
10:40
11:00
12:45
10:00
10:00
7.5
8
7.5
7.5
7.5
7.5
7.5
7.5
7.0
8
7.5
7.25
6.2
7.5
8
7.5
7.5
7.5
7.5
7.0
7.5
7.0
7.2
Indicator Sol.
Test Tabs
Indicator Sol
7.5
6.8
Indicator sol.
Test strips
3:30
9:30
7.2
7.0
7.3
pH pen
87
97
103
115
124 NH
124 C
127
151
7.4
7.8
7.8
7.0
6.5
Litmus paper
pH paper
Tablet test kit
Indicator sol.
Indicator sol.
Indicator sol.
Indicator sol.
Litmus Paper
Indicator sol.
Indicator sol.
pH pen