EN-18 STARTER 300 Portable pH Meter
7
BUFFER GROUP
STARTER 300
automatically corrects for the temperature dependence of the buffer group pH value
given in the following tables (
b2, b3, b4
), you can find
b1
in 3.1.1.
Buffer group
b2
Europe standard
Temp
℃
pH2.00 pH4.01 pH7.00 pH9.21 pH11.00
5
2.02
4.01
7.09
9.45
11.72
10
2.01
4.00
7.06
9.38
11.54
15
2.00
4.00
7.04
9.32
11.36
20
2.00
4.00
7.02
9.26
11.18
25
2.00
4.01
7.00
9.21
11.00
30
1.99
4.01
6.99
9.16
10.82
35
1.99
4.02
6.98
9.11
10.64
40
1.98
4.03
6.97
9.06
10.46
45
1.98
4.04
6.97
9.03
10.28
50
1.98
4.06
6.97
8.99
10.10
Buffer group
b3
JJG119
Temp
℃
pH1.68 pH4.00 pH6.86 pH9.18 pH12.46
5
1.67
4.00
6.95
9.39
13.21
10
1.67
4.00
6.92
9.33
13.01
15
1.67
4.00
6.90
9.28
12.82
20
1.68
4.00
6.88
9.23
12.64
25
1.68
4.00
6.86
9.18
12.46
30
1.68
4.01
6.85
9.14
12.29
35
1.69
4.02
6.84
9.11
12.13
40
1.69
4.03
6.84
9.07
11.98
45
1.70
4.04
6.83
9.04
11.83
50
1.71
4.06
6.83
9.02
11.70
Buffer group
b4
JIS Z 8802
Temp
℃
pH1.68 pH4.01 pH6.86 pH9.18
5
1.67
4.00
6.95
9.40
10
1.67
4.00
6.92
9.33
15
1.67
4.00
6.90
9.28
20
1.68
4.00
6.88
9.23
25
1.68
4.01
6.86
9.18
30
1.68
4.02
6.85
9.14
35
1.69
4.02
6.84
9.10
40
1.69
4.04
6.84
9.07
45
1.70
4.05
6.83
9.04
50
1.70
4.06
6.83
9.01
