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Dependence of the disinfection level on the ethanol concentration
  1. Hygiene

Dependence of the disinfection level on the ethanol concentration

LB6.1.4.7
Dependence of the disinfection level on the ethanol concentration
Dependence of the disinfection level on the ethanol concentration

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Description

The students test the antibacterial effect of ethanol solutions with different concentrations. They incubate agar plates with different concentration levels and recognise that ethanol only has a disinfectant effect from a concentration of 60 %.

Components of equipment sets

1 6719720  4 
Ethanol, denaturated, 1 l LD
GHS02GHS07 Danger H225 H319
3 664183  4 
Petri dish, 100 x 20 mm, glass LD
1 667057  4 
Test tube rack metal, 20 mm Ø LD
4 6640421  4 
Test tube Fiolax 16 mm x 160 mm LD
1 665994  4 
Graduated pipette 1 ml LD
1 666003  4 
Pipetting ball (Peleus ball) LD
1 665997  4 
Graduated pipette 10 ml LD
1 6659531  4 
Dropping pipette 150 mm x 7 mm Ø LD
1 6659541  8 
Dropper bulb LD
1 662334  4 
Drigalski spatula, glass LD
1 667027  4 
Tweezers, blunt, 130 mm 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 610010  8 
Laboratory safety goggles LD
1 6667031  8 
Teclu burner, propane LD
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Physics
Chemistry
Biology
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