Demonstration experiment using wireless data transmission to a large digital to display. Heavy metal ions can seep into water courses, for example from galvanising plants or other similar industries. They have the effect of suppressing the action of enzymes, so that the metabolic processes of organisms, which they would normally control, are disrupted or even eliminated. This apparatus demonstrates how enzyme functioning can be blocked by heavy metal ions using the example of decomposition of urea by urease enzymes.
| Materiallist (Excerpt) |
Product |
Amount |
|
Large-scale display, digital, RS-232 port
|
07157-93
|
1
|
|
Set of Precision Balance Sartorius TE 412 and measure software balances,230 V
|
48835-88
|
1
|
|
Cobra4 Display-Connect, Set of transmitter and receiver for using the Cobra4 Mobile-Link with large-scale displays
|
12623-88
|
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
|
|
Support rod, stainless steel, l = 600 mm, d = 10 mm
|
02037-00
|
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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