NAPT is a non-profit membership association dedicated to the improvement of measurement quality.   

• We provide professional administration, coordination and support of Interlaboratory Comparisons (ILCs), Proficiency Testing (PTs), and Round Robins (Click here for definitions of ILC, PT, Round Robin). 
• NAPT’s products and services help technicians and managers improve and better understand their measurement processes, NAPT provides training programs designed to help calibration and measurement. 
• NAPT is the only nonprofit association that offers open enrollment in our proficiency testing programs to any laboratory or organization capable of making the required measurements. 
• We promote international participation of laboratories and accreditation organizations.  

• NAPT programs are conducted in accordance with current quality guidelines and standards. 
• Our services and programs allow the metrology community to meet the growing demand for proof of measurement proficiency necessary to achieve and maintain accreditation. 
• We provide third party, unbiased verification of test results. 
• NAPT test results are accepted by all recognized accreditation bodies as technically sound and in conformance with required standards.