
The American Association of Textile Chemists and Colorists (AATCC) has announced that registration is open for its 2027 Proficiency Testing Program (PTP).
The AATCC Proficiency Testing Program enables laboratories to benchmark their performance against peer laboratories using standardized materials and established test methods.
Each participating laboratory receives:
- Standardized test specimens and detailed instructions
- Approximately one month to complete testing and submit results
- Confidential performance reports comparing results to peer laboratories
- A Certificate of Participation documenting involvement in the program
Participation can support quality assurance initiatives, laboratory accreditation efforts, staff training and continuous improvement programs.
2027 program schedule
AATCC offers each PTP once per calendar year. Registration and payment must be completed by the 15th of the month preceding sample distribution.
Important: Registrations received after the deadline cannot be accommodated, so early enrollment is encouraged.

Registration
Registration is now open. Laboratories are encouraged to enroll early to ensure participation in their selected programs before registration deadlines. Visit https://www.aatcc.org/ptp.
For technical questions about the Proficiency Testing Program, contact the AATCC Technical Department at ptp@aatcc.org.