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Classroom Kits There are 50 products.
Thermal & Chemical Pollution
Using yeast to represent oxygen consuming microorganisms or animals, the effect of temperature on biological oxygen demand and dissolved oxygen in water is explored, relating this to the metabolism of an organism. Further activities investigate chemical pollution by direct poisons (lead irons) and indirect (phosphate ions) that disrupt what lives in water by favoring the growth of one type of organism.
Using yeast to represent oxygen consuming microorganisms or animals, the effect of...
Using yeast to represent oxygen consuming microorganisms or animals, the effect of temperature on biological oxygen demand and dissolved oxygen in water is explored, relating...
2500
.
How Clean Is The Soil
This kit encourages students' investigation into the nature of soils. Soils are observed and characterized based on physical examination. The chemical composition is examined and the microbial community studied. The kit is intended for a demonstration, or small groups, or several repetitions for an individual investigator and will require two 45-minute class periods.
This kit encourages students' investigation into the nature of soils. Soils are...
This kit encourages students' investigation into the nature of soils. Soils are observed and characterized based on physical examination. The chemical composition is examined...
5800
.
Chemical Composition of the Soil
Permits students to perform chemical determinations on locally derived soils to determine percentage of water, organic content, pH, and the presence of calcium, carbonates, magnesium, phosphates, sulfates, potassium, nitrate, ammonium and iron. Provides an accurate profile of the chemical nature of the soil.
Permits students to perform chemical determinations on locally derived soils to...
Permits students to perform chemical determinations on locally derived soils to determine percentage of water, organic content, pH, and the presence of calcium, carbonates,...
2000
.
Bacterial Pollution Kit
A sterile culture medium that is ready to heat, and sterile Bi-Petri Dishes are among the materials for students to test for the presence of coliform bacteria in water. The kit provides for the detection of E.Coli (human and animal enteric bacteria) and total bacteria in up to 20 natural water samples, and requires one 45-minute class period.
A sterile culture medium that is ready to heat, and sterile Bi-Petri Dishes are among...
A sterile culture medium that is ready to heat, and sterile Bi-Petri Dishes are among the materials for students to test for the presence of coliform bacteria in water. The kit...
1400
.
Microorganisms in the Soil
With this kit students are able to culture soil samples from local sources to observe the nature of soil microbes. Students investigate the nutritive and non-nutritive components in the soil samples. A dozen pairs of students have materials for one 45-minute class period to be followed by observations over the next three to four days.
With this kit students are able to culture soil samples from local sources to observe...
With this kit students are able to culture soil samples from local sources to observe the nature of soil microbes. Students investigate the nutritive and non-nutritive...
2100
.
Enviromental Test Lab
Our kit includes extensive tests for evaluating both water and air quality. You will test for dissolved oxygen, water hardness, pH, phosphates, chlorides, lead, hydrogen sulfide, air particulates, gaseous pollutants and rain water chemistry. The kit allows for three repetitions of the testing of local environmental conditions in a variety of formats that might include demonstration, small group, and individual use.
Our kit includes extensive tests for evaluating both water and air quality. You will...
Our kit includes extensive tests for evaluating both water and air quality. You will test for dissolved oxygen, water hardness, pH, phosphates, chlorides, lead, hydrogen...
5500
.