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.  

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.

Charles Ellis


Tom Wiandt

Hart Scientific

Mike Johnson


Ross Nelson

3M Corporate Metrology Lab

LaVar Clegg

Interface, Inc.

Jim Mosher

MPC Walworth

John Marcus

PTC Metrology

Mike Linn

Johnson Controls

Michael Bair

DH Instruments

Karl Klevens

Process Instruments Inc.

Rick Brion

Martin Calibration

Chris Grachanen

Hewlett Packard

Kevin Rust

MTS Systems Corporation

Gaylord DeGroot


Lee Fletcher

QC Inspection Services, Inc

John Reynertson

Sturtevant Richmont

Greg Minard

GM Powertrain Metrology Laboratory

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."