Help students gain a better awareness of environmental conditions in their area and in the world at large. -- How Clean Is the Water? tests for the presence of phosphates, pH, chlorides and lead. -- The physical makeup of soil, including nitrate, phosphate, potassium, chlorides, oil and microorganisms, is explored in How Clean Is the Soil? -- Experiments in How Clean Is the Air? include dust particle monitoring, deterioration of nylon, fabric fading due to oxides of nitrogen, and dissolving pollutants in rain water. Thermal and Sewage Pollution demonstrates how microorganisms and chemicals contribute to water pollution. -- All Kits include an instruction guide. |
![Environmental Test Kits [How Clean Is the Air?]](./66207-00.jpg)