What is "Participation in interlaboratory comparison or proficiency-testing programs"

C

Curtis317

#1
We are just starting in the project of becoming a certified lab. Upon reviewing the requirements for ISO 17025. It seems to require that we participate with other lab for "[FONT=&quot]Participation in interlaboratory comparison or proficiency-testing programs" How do we do that? Or do we only need to be prepared to participate with other labs? Basically I am not understanding the requirement. Can anyone help?[/FONT]
 
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John Broomfield

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Super Moderator
#2
Re: What is "Participation in interlaboratory comparison or proficiency-testing progr

We are just starting in the project of becoming a certified lab. Upon reviewing the requirements for ISO 17025. It seems to require that we participate with other lab for "[FONT=&quot]Participation in interlaboratory comparison or proficiency-testing programs" How do we do that? Or do we only need to be prepared to participate with other labs? Basically I am not understanding the requirement. Can anyone help?[/FONT]
Curtis,

As a lab you are accredited (not certified) for your competence in accordance with the requirements of ISO 17025.

You should already be comparing your test results with those of three or four other trusted labs based on testing separate specimens taken from the same samples. And you would be investigating the causes of any discrepancies.

Proficient labs do this to assure the quality of their testing for themselves and their customers.

You should seek to join accredited labs in their comparison or proficiency testing right away just in case you have to determine and remove the root causes of any discrepancies.

Of course, your lab will keep records of the the proficiency sampling, testing, reporting and any corrective actions.

John
 
#3
Re: What is "Participation in interlaboratory comparison or proficiency-testing progr

First contact the agency you are going to obtain your laboratory accreditaiton. They will have a list of proficiency test programs or program organizers that they recognize that have proficiency tests related to your scope. Second contact that proficiency program organizer and see what it will take to join their proficiency test program. Third sign up for a test or two, receive the samples, run the test, submit the data, and review the results report - note you may have to conduct a corrective action and run the test over again in order to come into the acceptable value range for the sample sent to you.

Alternatively if your lab belongs to an organization that has several like labs, look to see if they have a round robin test every once in awhile. This will be where the organization goes to a manufacturer and has the manufacturer build sample(s) of a typical product all of the labs will see. The sample(s) are sent to all the labs at one time or sent to lab 1 who then sends it to lab 2 who then sends it to lab 3, etc. This method is good if you have at least 10 or more similar labs.

Sometimes the standard writing organizations may have a round robin to confirm a test method. This may include some government owned labs.

Be aware not every type of test is able to have round robins or proficiency testing other than the individuals in your lab taking training which includes a test that is graded.
 

dwperron

Trusted Information Resource
#5
Re: What is "Participation in interlaboratory comparison or proficiency-testing progr

I agree with Tiny Timm - check with your accrediting body first. They will have their own requirements regarding proficiency testing requirements. The body I work with, A2LA, for instance requires that you use commercially available PT programs if they are available.

A couple of free documents you can download that explain more specifically the requirements for proficiency testing are:

https://www.ilac.org/documents/ILAC_P9_06_2014.pdf

https://www.aplac.org/documents/pt/aplac_pt_006_issue_2.pdf
 
S

S Mittens

#6
Re: What is "Participation in interlaboratory comparison or proficiency-testing progr

Hi Curtis,

I've been having a little difficulty myself with finding a proficiency testing program for XRF, somebody did suggest searching EPTIS, hopefully it might be of some use to you...

(I'm afraid I cannot post links but it does pop straight up on Google)
 
C

Curtis317

#7
Re: What is "Participation in interlaboratory comparison or proficiency-testing progr

Thank you all for your information and advice. We will be a meteorology lab. Measuring parts to less 0.0001 mm. I will look into your advice and try to contact some labs that we would do the testing with.
 

dgriffith

Quite Involved in Discussions
#8
Re: What is "Participation in interlaboratory comparison or proficiency-testing progr

Thank you all for your information and advice. We will be a meteorology lab. Measuring parts to less 0.0001 mm. I will look into your advice and try to contact some labs that we would do the testing with.
I've just got to ask:
Did you mean metrology instead of meteorology, or are you really going to measure rainfall to 0.0001 mm ? :lol:
 
C

Curtis317

#9
Re: What is "Participation in interlaboratory comparison or proficiency-testing progr

metrology we have had way too much rainfall. Just measuring parts.
 
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