 Image search results - "samples" |
Near the Toya Mizunoeki is Toya High School whose Environment Club regularly take water samples from Lake Toya to test the lake's water quality. They go behind the Toya Mozunoeki and take water samples with plastic buckets.
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The students do various tests, each one does a specific task. 洞爺高等学校
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With buckets and water testing kits, they do their testing.
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One girl takes notes as the others give her their test results.
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Color charts are used to assess the water quality. This is for phosphoric acid.
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For nitrate.
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For Chemical Oxygen Demand (COD).
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After the water testing is done, they throw back the water into the lake.
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