NCSL Z540.1 Handbook

This Handbook is an informational guide intended to enhance the user’s understanding of the requirements of the American National Standard, “Calibration Laboratories and Measuring and Test Equipment -- General Requirements," ANSI/NCSL Z540-1-1994, and to assist in providing for the uniform evaluation of a laboratory’s compliance to the individual requirements of the Standard. This Handbook shall not modify, add to, nor subtract from any of the requirements of ANSI/NCSL Z540-1-1994.

This Handbook follows the format used in ANSI/NCSL Z540-1-1994 and, consequently, is organized in two parts.

Part I of the Handbook deals with the general requirements. As stated in the Standard, a calibration laboratory must demonstrate that it operates in compliance with these requirements if it is to be recognized as competent to carry out specific calibrations. The general requirements also pertain to the development and implementation of the laboratory’s quality system.

Part II deals with the quality assurance requirements for a Supplier’s system to control the accuracy of the measuring and test equipment used to assure that the supplies and services provided comply with prescribed requirements.

NCSL Z540.3 Handbook

The American National Standard, ANSI/NCSL Z540.3-2006, Requirements for the Calibration of Measuring and Test Equipment, prescribes requirements for a calibration system to control the accuracy of the measuring and test equipment used to ensure that products and services comply with prescribed requirements. This document is commonly referred to in this Handbook as the National Standard or Standard.

This Handbook provides discussion and guidance for sub-clauses of the Standard, and furnishes representative examples that address key aspects of the topics discussed. As the Standard is a requirements oriented document, “how to” type information is limited as implementation may vary within and among organizations.

The information in this Handbook should not be viewed as the only means of applying or complying with the requirements of the Standard. This Handbook is also not intended to, nor should it be construed as, an interpretation of the Standard.