(These descriptions may not be complete and are provided for information only.)

Addendum h (adds a designation of R-422D to the blend R-125/134a/600a (65.1/31.5/3.4) with tolerances of (+0.9,-1.1/ ±1.0/+0.1,-0.4) and a safety classification of A1.)

Addendum g (This addendum adds a column to Tables 1 and 2 titled “Highly Toxic or Toxic,” with each refrigerant designated as highly toxic, toxic (as defined by the International Fire Code, Uniform Fire Code, and OSHA), or neither (for refrigerants less toxic than as defined above), adds definitions for these terms, and updates the references.)

Addendum i (This addendum adds a designation of R-426A to the blend R-125/134a/600a/601a (5.1/93.0/1.3/0.6) with tolerances of (±1.0/±1.0/+0.1,-0.2/+0.1,-0.2) and a safety classification of A1.)