Testing Overview

EMSL Analytical, Inc. founded in 1981, has worked for several years effectively and efficiently managing our quality system as demonstrated by the numerous accreditations and certifications currently held throughout our laboratory network

One of the key attributes of an accredited laboratory is the traceability and appropriate documentation for measurement, calibration and analytical results. According to the American Association for Laboratory Accreditation (A2LA).

“Traceability is the property of a measurement result whereby the result can be related to a reference through a documented unbroken chain of calibrations, each contributing to the measurement uncertainty. The purpose of requiring traceability is to ensure that measurements are accurate representations of the specific quantity subject to measurement, within the uncertainty of the measurement.”

“Traceability” - Defined

Traceability is typically distinguished by various components; however, it is our belief that the key factors routinely include the following:

1. documentation: the entire process must be performed according to the laboratories standard operating procedures (SOPs). Additionally, all information is to be continually recorded and updated as needed

2. documented references: readily be traceable to known and documented standards

3. demonstrated competence: processing of all laboratory samples must be completed by staff that has demonstrated technical competence

4. application of measurement uncertainty: measurement uncertainty at each step in the traceability process must be calculated and must be consistent with standard methods and must be declared in such a way that the overall uncertainty for the final results can be calculated or estimated within acceptable levels

5. scheduled calibration: appropriate calibrations must be scheduled and completed on a regular basis, which is typically determined by the frequency of use of the instruments

It is critical that your laboratory follow the principles of accrediting bodies - EMSL Analytical, Inc. takes great pride in being able to share the philosophical opinions of major accrediting bodies and will continue to strive towards providing a high level of service, quality and value to our clients.


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