2016UL 1821B BULLETIN-2016 UL Proposed First DRAFT of the Standard for Safety Evaluating Compatibility of Products with CPVC Piping
2014UL 1821B BULLETIN-2014 UL Proposed First DRAFT of the Standard for Safety Evaluating Compatibility of Products with CPVC Piping
2013UL 1821B BULLETIN-2013 UL Proposed First DRAFT of the Standard for Safety Evaluating Compatibility of Products with CPVC Piping
2012UL 1821B BULLETIN-2012 UL Proposed First DRAFT of the Standard for Safety Evaluating Compatibility of Products with CPVC Piping (COMMENTS DUE: March 15@ 2012)