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1 мая 2024 г. · The threshold limit value is now 0.02 parts per million (ppm), a substantial reduction from the previous value of 0.5 ppm.

Since 1946, the ACGIH has published a TWA for benzene. By the 1960s the limit had been reduced from 100 parts per million (ppm) to 25 ppm.

Оценка 5,0 (7) 8 июл. 2024 г. · The new threshold limit value (TLV) for benzene is 0.02 ppm, which is 25 times lower than the previous standard.

14 авг. 2024 г. · What is the American Conference of Governmental Industrial. Hygienists (ACGIH®) recommended exposure limit for benzene? ACGIH® TLV® - TWA: 0.02 ...

At that time a STEL of 2.5 ppm was also adopted. In January 2024, the ACGIH reduced the TWA for Benzene to 0.02 ppm and eliminated the STEL.

2 апр. 2024 г. · AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3: 50 ppm/150 ppm/1000 ppm ...

ACGIH: The threshold limit value (TLV) is 0.5 ppm averaged over an 8-hour workshift and 2.5 ppm as a STEL (short-term exposure limit).

Immediately Dangerous to Life or Health Concentrations (IDLH) ; Emergency Exposure Guidance Levels (EEGLs): ; 1-hour EEGL: 50 ppm ; 24-hour EEGL: 2 ppm ...

3 окт. 2022 г. · In 2022, ACGIH published a Notice of Intended Change to modify the TLV to 0.02 ppm for an eight-hour TWA and 0.1 ppm for a 15-minute STEL.