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Table 1 Acid mist assessment of the study factory

From: Examining relationship between occupational acid exposure and oral health in workplace

  Factory A   Factory B  
Air sampling
(mg/m3)
PEL-TWA#
(mg/m3)
Air sampling
(mg/m3)
PEL-TWA
(mg/m3)
Nitric acid 0.014 5.2
Sulfuric acid <  0.007 1 0.066 1
Hydrochloric acid <  0.050 7.5
  1. #PEL Permissible exposure limit-time weighted average
  2. #One study factory did not provide acid mist assessment papers; another study factory did not enroll exposed employees