Determination of the bacterial count in soil

LB6.1.3.2
Determination of the bacterial count in soil
Determination of the bacterial count in soil

Description

In this experiment the students examine various soil samples for their bacterial content. To do this, they create a dilution series of the respective soil sample and incubate agar plates with it, which were filled with special soil extract agar. They learn that up to 100 million bacteria can occur in 1 g of soil.

Components of equipment sets

3 664183  4 
Petri dish, 100 x 20 mm, glass LD
1 6701600  4 
Agar-Agar, 50 g LD
1 6721100  4 
D(+)-Glucose, 100 g LD
1 6712310  4 
Calcium carbonate, precipitated, 500 g LD
1 6725800  4 
Potassium biphosphate, 50 g LD
1 6731630  4 
Magnesium sulfate, sep., 500 g LD
1 6719110  4 
Iron(II) sulfate-7-hydrate, 250 g LD
GHS07 Warning H302 H315 H319
1 6719720  4 
Ethanol, denaturated, 1 l LD
GHS02GHS07 Danger H225 H319
4 6640421  4 
Test tube Fiolax 16 mm x 160 mm LD
1 667057  4 
Test tube rack metal, 20 mm Ø LD
1 665994  4 
Graduated pipette 1 ml LD
1 665997  4 
Graduated pipette 10 ml LD
1 666003  4 
Pipetting ball (Peleus ball) LD
1 666966  4 
Spoon-ended spatula polyamid, 180 mm LD
1 665212  4 
Glass stirring rod 200 x 8 mm Ø LD
1 662334  4 
Drigalski spatula, glass LD
1 30945  4 
Universal pencil LD
1 602022  4 
Beaker Boro 3.3, 100 ml, squat LD
1 661035  8 
Round filter, Type 595, 125 mm Ø, Set of 100 LD
1 6677967
Compact Balance EMB200-2 LD
1 6667031  8 
Teclu burner, propane LD
1 610010  8 
Laboratory safety goggles LD
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