Arizona Instrument LLC is proud to announce the release of the Computrac Vapor Pro XL - the latest in a long line of accurate, reliable and easy to use moisture analyzers.

About the Vapor Pro XL

The Vapor Pro XL is a chemical free, moisture specific alternative to Karl Fischer titration. It features an upgraded heater, which increases the upper limit for testing temperatures to 300°C and allows for improved control over testing temperatures. The VPXL is also compatible with multiple sizes of sample vials and is equipped with stepped temperature testing capabilities for enhanced method development. The brand new touch screen and intuitive user interface make the Vapor Pro XL the most user friendly Computrac yet.

The Vapor Pro XL is ideal for nearly any application in which Karl Fischer is used. From plastics to petroleum products, pharmaceuticals to chemicals, the VPXL is the perfect fit for a wide variety of applications. Visit today to learn more about the newest member of the Computrac family.

ASTM Methods
The Vapor Pro XL is can be used in accordance with:

  • ASTM D7191-10: Standard Test Method for Determination of Moisture in Plastics by Relative Humidity Sensor
  • ASTM D7546-15: Standard Test Method for Determination of Moisture in New and In-Service Lubricating Oils and Additives by Relative Humidity Sensor.

It also correlates well with popular methods, including: ASTM D6304-16, D6869-03, D1364-02, D4017-02, D4928-12, E1064-16, D5530-15 and D4672-12.

About Arizona Instrument LLC

Arizona Instrument LLC introduced its first moisture analyzer in 1978 and quickly became an accepted leader in moisture analysis. The company is dedicated to providing precision moisture analysis instruments that are accurate, reliable and easy to use. Its Computrac line of moisture analyzers includes both loss-on-drying instruments as well as chemical-free alternatives to Karl Fischer titration.

The Computrac MAX line of moisture, solids and ash analyzers was first introduced in 1982 and relies on the loss-on-drying and loss-on-ignition principles of operation. The MAX 4000XL is a rugged and reliable LOD instrument that works with a wide range of materials while the MAX 5000XL has the higher temperature capabilities of a muffle furnace, allowing for easy and repeatable moisture, solids and ash testing from a single sample.

The first Computrac Vapor Pro was introduced in 1996 as a chemical free alternative to Karl Fischer. The Vapor Pro XL builds upon the proven success of its predecessors while incorporating new features to improve repeatability, precision and flexibility. Arizona Instrument LLC also manufactures Jerome Hydrogen Sulfide and Mercury Vapor Analyzers.

If you would like to learn more about the Vapor Pro XL or any of the other Computrac moisture analyzers or Jerome toxic gas analyzers, visit, email at or call at (800) 528-7411.