Appendix D - Do Of Saturated Water Vs. Altitude; Appendix E: Tds Conversion Method - Extech Instruments DO700 User Manual

Appendix D – DO of Saturated Water vs. Altitude
Altitude Barometric
pressure
Feet
meters kPa mmHg
0
0 101.3
500
152 99.34
1000
305 97.6
1500
457 95.87
2000
610 94.28
2500
762 92.54
3000
915 90.95
3500
1067 89.35
4000
1220 87.75
4500
1372 86.15
5000
1524 84.56
5500
1677 83.09
6000
1829 81.63
6500
1982 80.03
7000
2134 78.56

Appendix E: TDS Conversion Method

Conductivity
25° C
uS/cm mg/l
23 11.6
84 40.4
445 225.6
1417 744.4
1500 757.1
2060 1045
2764 1382
8974 5101
12880 7447
15000 8759
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DO Altitude
(25° C)
mg/l Feet Meters
760 8.25 7500 2287
746 8.09 8000 2439
733 7.95 8500 2591
720 7.81 9000 2744
708 7.68 9500 2896
695 7.54 10000 3049
683 7.41 10500 3201
671 7.28 11000 3354
659 7.15 12000 3659
647 7.02 13000 3963
635 6.89 14000 4268
624 6.77 15000 4573
613 6.65 16000 4878
601 6.52 17000 5183
590 6.40 18000 5488
KCl NaCl
Ratio mg/l
0.50 10.7
0.48 38.04
0.50 215.5
0.52 702.1
0.50 737.1
0.50 1041
0.50 1415
0.57 4860
0.58 7230
0.58 8532
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25
Barometric DO
pressure (25° C)
kPa mmHg mg/l
77.1 579 6.28
75.63 568 6.16
74.44 559 6.06
72.97 548 5.94
71.64 538 5.83
70.17 527 5.71
68.84 517 5.61
67.38 506 5.49
66.58 500 5.42
65.78 494 5.36
64.98 488 5.29
64.18 482 5.23
63.38 476 5.16
62.58 470 5.10
61.79 464 5.03
TDS 442
Ratio mg/l Ratio
0.47 14.7 0.64
0.45 50.5 0.60
0.48 300 0.67
0.50 1000 0.71
0.49 1050 0.70
0.50 1500 0.72
0.51 2063 0.75
0.54 7608 0.85
0.56 11367 0.88
0.57 13445 0.90
DO700-en-GB_v2.3 3/15