What is okay to use as a reference material for ISO 17025?

W

Whiskey

Info Seeker
#1
#1
More specifically, the technical manager for our 17025 test lab purchased the following set of pH buffers:

Oakton® pH Buffer Solution Packs - Cole-Parmer

It says "Manufactured under ISO 9000 quality guidelines and traceable to NIST standards" but it did not come with a certificate.
EDIT: I was able to find the CoA on the website itself - https://pim-resources.coleparmer.com/certificate-of-analysis/0065400_CC719389.pdf

What exactly does 17025 require for its reference materials and are these buffers appropriate to use for that?
 
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D

dwperron

Trusted Information Resource
#2
#2
The Oakton pH Buffer Solution Packs you reference is not adequate for 17025 accredited use, as it is not a 17025 accredited buffer solution and the CoA does not supply measurement uncertainties.

The correct solution from the same manufacturer is this:
Oakton® Traceable® pH Buffer Solutions - Cole-Parmer

Here is an example of a 17025 Accredited CoA for a buffer solution:
https://www.fishersci.com/store/cer...ION , TRACEABLE TO&countryCode=US&language=en

You will need to produce the bottle for the solution in use with the lot number, and a copy of the CoA.
 
W

Whiskey

Info Seeker
#3
#3
dwperron said:
The Oakton pH Buffer Solution Packs you reference is not adequate for 17025 accredited use, as it is not a 17025 accredited buffer solution and the CoA does not supply measurement uncertainties.

The correct solution from the same manufacturer is this:
Oakton® Traceable® pH Buffer Solutions - Cole-Parmer

Here is an example of a 17025 Accredited CoA for a buffer solution:
https://www.fishersci.com/store/certificates/pdf?certificateNumber=M1990020001&lotNumber=HC02424202&docType=01&description=BUFFER SOLUTION , TRACEABLE TO&countryCode=US&language=en

You will need to produce the bottle for the solution in use with the lot number, and a copy of the CoA.
Click to expand...
Thanks for your reply! I'll be speaking to the lab about purchasing something 17025 accredited.
 
G

greif

Involved In Discussions
#4
#4
If your reference material affects your traceability, it must have calibration data from an accredited source, as well as uncertainty data.
 
B

Brakeman

Involved In Discussions
#5
#5
Reference materials or gaging, is just that, it is only for an example and only for looks, it may not be relied upon to make process decisions.
 
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