NTEP Standard

The NTEP standard (National Type Evaluation Program) is a certification program used in the United States to verify that weighing and measuring devices comply with legal‑for‑trade requirements. NTEP is administered by the National Conference on Weights and Measures (NCWM) and ensures that weighing equipment meets the technical and performance criteria defined in NIST Handbook 44.

In the weighing industry, NTEP approval is essential for any scale or weighing system used in commercial transactions, where the measured weight determines price, taxation, or regulatory compliance. This includes applications such as truck scales, platform scales, floor scales, livestock scales, hopper scales, and retail and industrial weighing systems. Without NTEP certification, weighing equipment cannot legally be used for trade in most U.S. states.

NTEP evaluates both complete weighing systems and individual components, including load cells, weighing indicators, and scale assemblies. During the approval process, equipment is rigorously tested for accuracy, repeatability, linearity, temperature stability, and long‑term reliability under a wide range of environmental and operating conditions. The goal is to ensure that the equipment maintains correct measurements not only in controlled laboratory conditions, but also in real‑world industrial use.

Once a product successfully passes testing, it receives a Certificate of Conformance (CoC), which confirms that the device meets all applicable requirements of NIST Handbook 44. This certificate is publicly listed and allows state and local weights‑and‑measures authorities to accept the equipment for legal use without additional type testing. Approved devices are clearly identified by their NTEP markings and certificate number.

For manufacturers, NTEP certification demonstrates commitment to accuracy, quality, and regulatory compliance and opens access to the U.S. market. For end users, NTEP‑approved weighing equipment provides confidence in fair trade, consistent measurements, and legal acceptance across jurisdictions in the United States.

In summary, the NTEP standard is a critical benchmark in the weighing industry for legal‑for‑trade applications in North America. It ensures that weighing systems deliver accurate, repeatable, and trustworthy results, protecting businesses, regulators, and consumers alike.