Heavy-metal ions may be carried into surface or ground water
from mining fields or via the waste water of galvanicor similar
production sites. They block the effect of enzymes so that the
processes in the metabolism of the organisms that are controlled by
these enzymes may be disturbed or prevented. Using urea hydrolysis
with the aid of urease, the blocking of the enzymes by heavy-metal
ions can be measured with common laboratory methods.
| Materiallist (Excerpt) |
Product |
Amount |
|
Set of Precision Balance Sartorius TE 412 and measure software balances,230 V
|
48835-88
|
1
|
|
Cobra4 Mobile-Link set, incl. rechargeable batteries, SD memory card, USB cable and software "measure"
|
12620-55
|
1
|
|
Cobra4 Sensor-Unit Conductivity, with stainless steel electrodes
|
12633-00
|
1
|
|
Magn.stirrer Mini/MST
|
35740-93
|
1
|
|
Urease, lyophilized 5 g
|
31923-02
|
1
|
|
Stop watch, interruption type
|
03076-01
|
1
|
|
Stand for Cobra4
|
12681-00
|
1
|
|
Water, distilled 5 l
|
31246-81
|
1
|
|
Copper-II sulphate,cryst. 250 g
|
30126-25
|
1
|
|
Urea, 250 g
|
30086-25
|
1
|
|
Stand.solu.1413æS/cm(25øC), 460ml
|
47070-02
|
1
|
|
Graduated cylinder 100 ml
|
36629-00
|
1
|
|
Glass beaker DURAN®, tall, 50 ml
|
36001-00
|
1
|
|
Glass beaker DURAN®, tall, 100 ml
|
36002-00
|
1
|
|
Graduated cylinder 10 ml
|
36625-00
|
1
|
|
Glass beaker DURAN®, short , 250 ml
|
36013-00
|
1
|
|
Wash bottle, plastic, 500 ml
|
33931-00
|
1
|
|
Magnetic stirring bar 8mm, cylindrical
|
46299-00
|
1
|
|
Graduated pipette, 1 ml
|
36595-00
|
1
|
|
Glass rod,boro 3.3,l=200mm, d=5mm
|
40485-03
|
2
|
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