Buffer Group 4 (Ref. 25 °C) Jis Z 8802 (Japanese); Conductivity Standards; Conductivity To Tds Conversion Factors; Examples Of Temperature Coefficients (Alpha-Values) - Mettler Toledo SevenGo Duo SG23 Mode D'emploi

Appendix
13.1.4 Buffer group 4 (ref. 25 °C) JIS Z 8802 (Japanese)
5
10
15
20
25
30
35
40
45
50

13.2 Conductivity standards

The following predefined standards are available:
●
84 μS/cm
●
1413 μS/cm (default standard)
●
12.88 mS/cm
Tables for automatic temperature compensation are programmed in the meter for each standard.
T (°C)
0
10
15
20
25
30
35

13.3 Conductivity to TDS conversion factors

Conductivity
at 25 °C
84 µS
447 µS
1413 µS
1500 µS
8974 µS
12.880 µS
15.000 µS
80 mS

13.4 Examples of temperature coefficients (alpha-values)

Substance at 25°C
HCl
KCl
26
1.668
1.670
1.672
1.675
1.679
1.683
1.688
1.694
1.700
1.704
84 μS/cm
46 µS/cm
60 µS/cm
68 µS/cm
76 µS/cm
84 µS/cm
93 µS/cm
102 µS/cm
TDS KCl
ppm value
40.38
225.6
744.7
757.1
5101
7447
8759
52.168
Concentration
[%]
10
10
3.999 6.951
3.9998 6.923
3.999 6.900
4.002 6.881
4.008 6.865
4.015 6.853
4.024 6.844
4.035 6.838
4.047 6.834
4.060 6.833
1413 μS/cm
776 µS/cm
1020 µS/cm
1147 µS/cm
1278 µS/cm
1413 µS/cm
1552 µS/cm
1696 µS/cm
factor
0.5048
0.5047
0.527
0.5047
0.5685
0.5782
0.5839
0.6521
Temperature coefficient alpha
[%/°C]
1.56
1.88
9.395
9.332
9.276
9.225
9.180
9.139
9.102
9.068
9.038
9.011
12.88 mS/cm
7.15 mS/cm
9.33 mS/cm
10.48 mS/cm
11.67 mS/cm
12.88 mS/cm
14.12 mS/cm
15.39 mS/cm
TDS NaCl
ppm value factor
38.04 0.4755
215.5 0.4822
702.1 0.4969
737.1 0.4914
4487 0.5000
7230 0.5613
8532 0.5688
48.384 0.6048
pH/conductivity meter SG23