Safework Australia (SWA) has been undertaking a review of Workplace Exposure Standards (WES) focusing on the 8 hour Time Weighted Average (TWA) exposures.
Attached is a summary document of most but not all substances with tightening of around 10 fold or more, with a few more commonly used chemicals. Please check this list to see if any of these chemicals are used and what would be the consequences of trying to meet this new WES.