• McCampbell Analytical, Inc.
  • Connected With Us
  • 1534 Willow Pass Road Pittsburg, CA 94565

Full-Service Environmental Laboratory with 35 Years of Proven Quality and Expertise

Accredited Testing. Fast Turnaround. Trusted Results

  • Certified & Accredited (NELAP • ELAP • DoD • USDA • AIHA-LAP)
  • Rapid Turnaround Times & Responsive Service
  • Experienced Support for Complex Projects

SPOTLIGHT: Temporary Website Form Outage

Our online contact and application forms are temporarily unavailable. We apologize for the inconvenience and are working to restore service. In the meantime, please email main@mccampbell.com or call 877-252-9262 for assistance.

Environmental Unit Conversion Calculator

Use this environmental unit conversion calculator to convert analytical chemistry concentrations and molecular weight values commonly used in air, vapor intrusion, drinking water, groundwater, and environmental testing projects.
Amount Compounds


 
STP assumes 24.45 = (25°C and 1 atm).
Units
Molecular Weight
ppbv  
ug/L  
mg/m3  
ppmv  
ug/m3  
%