What does CPDA stand for?

Chemical Producers and Distributors Association (NTPA)

Chloramphenicol-Amended Potato Dextrose Agar - Microbiology

Citrate-Phosphate-Dextrose-Adenine - Anticoagulant - Hematology

Clay Pipe Development Association - British (DBA)

Copper Products Development Association - Later, INCRA

Council for Periodical Distributors Associations (EA)