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  calibration method according iso guide-25

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Author Topic:   calibration method according iso guide-25
Lurker (<10 Posts)

Posts: 2
From:Reynosa Tamps Mexico
Registered: Apr 2001

posted 16 April 2001 06:45 PM     Click Here to See the Profile for MRANGEL   Click Here to Email MRANGEL     Edit/Delete Message   Reply w/Quote
Hello IĞm working in a calibration company trying to get ISO guide-25 acreditation in mexico and I would like to know if somebody can help to define a calibration method, it means if somebody could tell me which information I must include or if I can get an example from some internet site.


Reynosa, Mexico.

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Jerry Eldred
Forum Wizard

Posts: 136
Registered: Dec 1999

posted 17 April 2001 10:12 AM     Click Here to See the Profile for Jerry Eldred   Click Here to Email Jerry Eldred     Edit/Delete Message   Reply w/Quote
If I understand your question correctly, you would like a standard which defines how to write calibration methods (procedures). National Conference of Standards Laboratories is located at , and has available for sale a set of recommended practices for operation of a calibration laboratory, including how to write calibration methods (among other areas). I have long used their recommended practices.


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Ken K
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Posts: 44
From:Wisconsin, USA
Registered: Jun 2000

posted 17 April 2001 11:20 AM     Click Here to See the Profile for Ken K     Edit/Delete Message   Reply w/Quote
NCSL Recommended Practice RP-3 is very usefull for writing calibration procedures.

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Forum Contributor

Posts: 11
From:W Chester OH USA
Registered: Apr 2001

posted 18 April 2001 04:08 PM     Click Here to See the Profile for JerryStem   Click Here to Email JerryStem     Edit/Delete Message   Reply w/Quote
As far as a method of calibrating, I believe you can make your own as well, especially if there isn't any readily available method for what you do (ASTM, etc...)

(We are also accredited Guide 25 and used the ASTM methods available, supplemented with our own.)


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Ryan Wilde
Forum Contributor

Posts: 20
From:Mineola, NY, USA
Registered: Feb 2001

posted 25 April 2001 05:34 PM     Click Here to See the Profile for Ryan Wilde   Click Here to Email Ryan Wilde     Edit/Delete Message   Reply w/Quote
(Back on my soapbox)

Since you are going through ISO Guide 25/17025 accreditation, it is VERY important that you realize that when the standard mentions 'Method', it is just that - a method, such as contact comparison. When it mentions 'Procedure' it is your written procedure that you use to follow the method. If you are writing procedures, then the NCSL-I RP-3 is wonderful, and your assessor will recognize the layout of your procedure. The procedure should, whenever possible, reference where you obtained the method.

Example: Gauge blocks - You write a local procedure for calibrating gauge blocks, and you have a nice table citing the tolerances. Let's say that you obtained these tolerances from ISO 3650. You should state after the table "Tolerances from ISO 3650, Page X, Table Y.". This will allow your assessor to know that you didn't pull tolerances and methods out of a hat.



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David D Stauffer
posted 30 May 2001 06:12 PM           Edit/Delete Message   Reply w/Quote
MRangle, Just so happens, I have procedures and work instructions for over 70 gages and measuring instruments. If interested, e-mail me:
ps they have already passed ISO audits and comply with qs9000.

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