Лабораторные материалы

 
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Water quality - contamination with heavy metals

Principle

Heavy-metal ions may be carried into surface or ground water from mining fields or via the waste water of galvanic or 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 ...

 
Детали

Продукт No: P0990162

Chemical fountain

Principle

Some gases such as hydrogen chloride dissolve readily in water. For example, 1 litre of water at 20 °C can dissolve approximately 443 litres of hydrogen chloride. For example, vacuum builds up quickly in a closed flask when the gas comes in contact with water, because the gas ...

 
Детали

Продукт No: P1310100

We examine our drinking water

Principle

This experiment shows how much the quality of drinking water of various locations in the same region can vary. The comparison of tap water with bottled mineral water and distilled water leads to surprising results.

Benefits

  • Experiment is part of an experiment set with ...
 
Детали

Продукт No: P1520062

Altitude measurement on a trail

Principle

The altitude profile of a hiking trail or route to school can be measured during a school trip or as an exercise for the students. The altitude profile can also be used to demonstrate that the atmospheric pressure decreases when the altitude increases. As a result, the experiment is ...

 
Детали

Продукт No: P1520262

Weather observation with the Cobra4 Mobile-Link

Principle

The compact Cobra4 "Weather" multisensor can be employed as a simple means to set up a weather station, which can then be used to explain the relationship between air pressure, humidity, temperature, and light intensity. The measurement combination of a Cobra4 Mobile-Link and a ...

...

 
Детали

Продукт No: P1520462

Terrain mapping

Principle

The drawing of maps is one of the favourite tasks of the students during geography lessons and of a high didactic value. The altitude measuring function of the Cobra4 Sensor-Unit "Weather" is a user-friendly tool which provides altitude values so that contour lines can be added ...

 
Детали

Продукт No: P1520662

Changes of the light conditions in a deciduous forest

Principle

Why are there only a few different kinds of plants in a deciduous forest? Except for having trees that are all approximately of the same height, hardly any other plants grow in a deciduous forest, except for young plants of the same type of trees. This experiment shows how the ...

 
Детали

Продукт No: P1520762

Acidity changes of a watercourse

Principle

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 ...

 
Детали

Продукт No: P1520862

Comparison of soil and air temperatures in the course of a

Principle

How does the temperature of the air affect the temperature of the soil in the course of a day?

Benefits

  • Experiment is part of an experiment set with numerous experiments in ecology
  • Universal handheld measurement device can also be used for other measurement parameters ...
 
Детали

Продукт No: P1520962

The pH value of various soils

Principle

Information concerning the quality of soils is of great importance for agricultural production. The students are familiarised with this subject via two experiments with pH measurements that show how much soils may differ from each other (experiment  "Characteristic pH values ...

 
Детали

Продукт No: P1521062

Salinity of soils and plant substrates

Principle

How suitable are certain soils and plant substrates for the nutrition of plants? This experiment is about measuring the conductivity, which in turn provides information as to which of the examined soils and plant substrates already contain nutrient salts for plant growth and to ...

 
Детали

Продукт No: P1521162

Raised bog and fen

Principle

Bogs and fens are habitats of plants that are specialised in soils with constant excess water. Apart from this specialisation, bogs and fens differ significantly from each other. Raised bogs and fens, for example, have different plant communities, which is due to their varied ...

 
Детали

Продукт No: P1521262

Salinity changes of a watercourse

Principle

This experiment shows how the salt that is washed out of an abandoned potassium rock pile drastically increases the salinity of a watercourse, as well as how the salinity decreases only slightly further downstream, and how the salinity can still be measured after the stream has ...

 
Детали

Продукт No: P1521462

We visit a wastewater treatment plant

Principle

A visit to a water treatment plant reveals some fascinating procedures and purification methods. We will not merely be concerned with interesting impressions, but instead we will increase our understanding for microbiological processes by measuring the key parameters: ...

 
Детали

Продукт No: P1521662

Impact of the forest type on humidity, temperature and

Tasks
  • Measurement of air humidity, air temperature and light intensity in various types of forests
 
Детали

Продукт No: P1521762

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