수돗물의 용존 산소 농도는 대체로 어느 정도인가요?
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여기에 용존 산소 측정기가 두 대 있어요. 이 방법을 통해 어느 쪽이 더 정확한지 알아보고 싶습니다. 감사합니다
8ppm 정도, 포화 상태입니다.
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