Accreditation Resource Page

Accredited Lab vs Accredited Calibration

Many customers have asked us what the difference is between an accredited calibration and an accredited lab. Read More

Changes to Transcat Service Levels

Several changes are being implemented to Transcat's service levels. We will try to answer some of the resulting questions in this FAQ. Read More

Transcat's Calibration Service Levels

Transcat offers several service levels to accommodate the varying quality system requirements a customer may have regarding calibration. Read More

Differences Between ISO-17025 vs. ANSI Z540.3

This white paper covers some Frequently Asked Questions we receive from customers about the differences between ISO-17025:2017 vs. ANSI Z540.3. Read More

Q & A Session with Howard Zion, Director of Service Application Engineering

Part 1

Learn more about the recent accreditation changes being implemented.

Part 2

Understand the impact of these changes to traceability and decision rules.

Part 3

Follow along as we wrap up with detailed discussion around guard banding.

Where's My Accreditation Logo?

There are new requirements for ISO 17025 accreditation as well as NIST’s definition of measurement traceability, both of which require measurement uncertainties to be included in calibration reports.

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What is a Decision Rule in Calibration?

When a calibration is performed, the instrument being calibrated (Unit Under Test, or UUT) is compared to another instrument (Metrology Standard).

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What is Guard Banding and what is its purpose?

Focusing on the lab and the method used for each test, there exists a Margin of Error (MOE) associated with each test.

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Z540 Calibration Lab Compliance

ANSI/NCSL Z540.3 is a U.S. national standard that establishes technical requirements for calibration labs. The Z540.3 standard was issued in 2006, and has since been updated, by the American National Standards Institute (ANSI) and the National Conference of Standards Laboratories (NCSL).

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Guard Banding Definitions

There are a number of Guard Banding methods that are available depending on the standards document.

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Featured White Papers

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What are the Benefits of Transcat's PCS Tool?

The PCS service feature is a unique offering you will find only at Transcat. It is effective in normalizing all of your calibration data to help equipment users determine when measurement risk situations exist.

Who's Making Decisions About Your Decision Rule?

A Decision Rule, as related to calibration, is meant to clarify to all parties involved (within your organization and external to your organization) the component of your quality system that notifies you when an impact analysis needs to take place.

PCS: What does this term on my report mean?

This is a new term that refers to the Probability of Compliance to the Specification. Very simply, it is an indicator that tells you when you may have more measurement risk than you can accept.