International Down and Feather Testing Laboratory

The testing standard being set by textile industry organizations such as AATCC, ADFC, ASTM, CFDIA, DAC, EDFA, IABFLO, IDFB, and TDFA.

[citation needed] IDFL was founded in Salt Lake City, Utah in 1978 by Wilford Lieber Sr. and his wife Mary Jean.

[3][4] Wilf Lieber Jr. is the current CEO[5][6] of IDFL Laboratory and Institute and serves as an associate member of various organizations such as the IDFB,[7] ADFC, EDFA and CFDIA.

Material is also graded for cleanliness by examining the fat and oil percentages, pH levels, odor, turbidity, and other purity factors.

This process may also involve visiting supply chains and factories to verify that down and feather materials are not sourced from live plucking or Foie gras production, as well as inspecting other elements such as sterilization procedures.