What statement is not true concerning carbon monoxide?

The statement regarding the current TLV for carbon monoxide (CO) being 1500 ppm is not true. The Threshold Limit Value (TLV) set by organizations such as ACGIH is considerably lower than the stated 1500 ppm. Typically, the TLV for CO is established at 25 ppm for an 8-hour time-weighted average, highlighting the need for strict exposure limits due to the health risks associated with carbon monoxide inhalation.

The reference to the Immediate Danger to Life or Health (IDLH) concentration indicates that while this level can vary by guidelines, 1500 ppm is still much higher than what is usually deemed an acceptable exposure level for prolonged or even short-term periods. It is crucial to keep in mind the dangerous properties of CO, which is indeed colorless and odorless, and a byproduct of combustion, which add to its risk as a poison in both occupational and residential settings, making the accurate understanding of its thresholds essential for safety management.