Announcement: NAPT is Open

NAPT is devoted to keeping staff, delivery carriers, and participants safe from the spread of COVID-19. NAPT is following the workplace guidelines from the Minnesota Department of Health, Centers for Disease Control and Prevention, and the World Health Organization. NAPT's COVID-19 Customer Message is located under the News tab NEWS & UPDATES. You may also find kit cleaning & handling suggestions in the 1st Quarter Newsletter located under News/Newsletter on the NAPT website Your help is greatly appreciated. If you have any questions NAPT staff is happy to help.


NAPT has the largest selection of round robin artifacts distributed throughout North America.  Don't see the right ILC/PT, NAPT can also assist your organization in the development of a customized Intra Laboratory Comparison.

Custom I-ILC/PTs

NAPT works with your lab to develop the right Intra Laboratory Comparison that meets the needs of your organization. NAPT can administer support to your in-house I-ILC/PT or provide support as you administer your own I-ILC/PT using the QMS Navigator.


“The QMS Navigator is the Metrology Community's most comprehensive statistical software & management tool for conducting comparisons.”

Get ready to have NAPT's 20+ years' proficiency testing management experience take you in the right direction.  

NAPT'S COVID-19 Customer Message in its entirety is located under the NEWS tab News & Updates 

NAPT is following the guidance of global health experts at the World Health Organization (WHO) and U.S. Centers for Disease Control (CDC) on preventing the spread of the COVID-19 virus. We are reminding our employees about frequent hand washing, and we are regularly cleaning and disinfecting our equipment and packaging upon receipt and before shipping. If you have any questions, please feel free to contact NAPT.


Full ILC/PT Services

Management Of Inter-laboratory Comparisons 

At NAPT, we provide our clients with an unbiased analysis of measurement processes to enhance awareness of their technical competence and data integrity.

Custom I-ILC/PTs

Intra-Laboratory Comparison

In the event NAPT cannot supply an ILC/PT to a lab, NAPT will work with the participating lab to develop an I-ILC/PT that meets the needs of that lab. NAPT will provide support for the lab to administer an in-house proficiency test through an Intra Laboratory Comparison.  NAPT can do this by either managing the INTRA for the participating lab or by referring the lab to purchase a license and use NAPT's QMSNavigator to administer their own I-ILC/PT.

QMS Navigator

Quality Management Software

Manage your own ILC/PT tasks from start to finish.

Our software will help you:

  • Design an ILC/PT
  • Manage an ILC/PT
  • Analyze Data Submitted
  • Generate Reports
  • Access ILC/PT info via any browser
  • And More

"The Metrology Community's most comprehensive statistical software & management tool for conducting comparisons and managing quality requirements."