Quality Management

Western States Calibration operates under the requirements of ISO 17025, ISO 9001, and ANSI/NCSL Z540-1 with measuring standards traceable to the National Institute of Standards and Technology.

ISO 17025:2017 Decision Rules:

By default, Western States Calibration (WSC) provides statements of conformity by applying a simple 1:1 decision rule per ASME B89.7.3.1. In applying this decision rule the TUR (test uncertainty ratio) shall be equal to or greater than 1:1. WSC’s default decision rule results in a worst-case estimated Probability of False Accept (PFA) of <2%.

If you require the use of some other decision rule, please contact us with your request.

Note: Custom decision rules may result in a price increase for your calibration services.

Calibration Management System

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A2LA Scope of Accreditation

A2LA Scope Listing

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Equipment Background Form

This form should be completed the first time an instrument is calibrated by WSC at your facility, or if an instrument has special requirements to be tested.

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Equipment Order Information Form

This form should be completed and included with all orders submitted to WSC.

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QPM (Permission Control)

To request a copy of our QPM, contact [email protected]