TraceAirII - Model 525 - Organic Vapor Monitor
The 525 TraceAir II badge replaces our 521 badge. The design was updated from TraceAir to TraceAir II. More information. The 525 is our fastest sampling rate badge, which means it is our most sensitive badge with the lowest reporting limits. Use this badge for monitoring chemicals with a low PEL (10 ppm or less), STEL monitoring, or for indoor air quality situations.