Features:

·   Detects inorganic acid in 2-seconds down to 1 part per million.

·   Fast, accurate, and easy to use, provides an early warning of acid problems.

·   Color Change Indicates Pass/Fail

·   Tests for Inorganic Acids to the ARI-700 limit of 1ppm

·   Works with All Refrigerants & Oils

·   Meets EPA Venting Regulations

·   Unique Patented Disposable Design

·   U.S. Patents #6,514,765 & #6,825,040