In September 2019 Assay Technology created a new badge, the 596 for Phenol.
The badge can be used for
8 hour TWAs (Reporting Limit: 0.030 ppm, OSHA TWA: 5 ppm) and
15 minute STELs (Reporting Limit: 0.96 ppm, NIOSH Ceiling, 1 hour: 15.6 ppm
Phenol was used to be collected by the 525 badge. Technically, there is little difference between the 596 and 525 badge. By creating the 596 badge, customers will find billing will be much simpler.
Laboratories can use the N525 badge and M525 for media.