The pH value (a measure of the concentration of hydrogen ions)
in running waters depends on the geological conditions, the
pollution load that is caused by agricultural production, and on
plant activities. This experiment shows how the pH value of a
stream changes even at a short distance and just a few kilometres
away from the spring.
| Materiallist (Excerpt) |
Product |
Amount |
|
Cobra4 Mobile-Link set, incl. rechargeable batteries, SD memory card, USB cable and software "measure"
|
12620-55
|
1
|
|
Cobra4 Sensor-Unit pH, BNC connector
|
12631-00
|
1
|
|
pH-electrode, plastic body, gel, BNC
|
46265-15
|
1
|
|
Water, distilled 5 l
|
31246-81
|
1
|
|
Buffer solution tablets pH4, 100
|
30281-10
|
1
|
|
Buffer solution tablets pH10, 100
|
30283-10
|
1
|
|
Protection sleeve for electrode with a diameter of 12 mm
|
37651-15
|
1
|
|
Wash bottle, plastic, 500 ml
|
33931-00
|
1
|
|
Beaker, 250 ml, low form, plastic
|
36013-01
|
2
|
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