Web23 de jan. de 2024 · While the exact shortly and long term carbon monoxide levels highly due ASHRAE, OSHA, NIOSH both other organizations differ, the consensus is that 9 ppm (parts-per-million) is the maximum indoor safely carbon oxides level over 8 hours 200 ppm or greater become cause physical sign also is fatal in hours Web24 de jan. de 2024 · The following CO2 levels are linked to these potential health risks: 230 – 350ppm: “normal” outdoor level; 350 – 1,000ppm: usual level found in occupied …
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