The presence of CO in an auto park indicates that other hazardous fumes (e.g. benzene) can also be present. On account of this, the German authorities have minimized the boundaries for CO in vehicle parking amenities from one hundred ppm to 50-sixty ppm, dependant upon the federal point out in https://basementventilation78899.blog5star.com/37117840/the-2-minute-rule-for-car-park-ventilation