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发表于 2015-6-28 08:42:47
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本帖最后由 cgc717 于 2015-6-28 08:52 编辑
对于电导率仪、pH计应是做校准,而非确认。
其校准频率是根据风险评估来确定的,主要是依据使用的频率来定的;如果你每天均使用,而2年才校准一次,检查官可能认为频率太低了!
另外,请注意校定和校准的差别(论坛里有这方面的贴子或找万能的度娘 );GMP要求的是校准。
给你一个我3年前咨询官方(EDQM)得到的解答:
it is difficult to explain this in one or two sentences. Principally, I think that what you are doing in your company is rather a qualification of equipment than a calibration. The frequency depends on the use and has to be defined by the laboratory, there are no general rules. A period of 6 months seems reasonable.
A calibration is rather a determination of the deviation between the measurement and the true value of measurement under specified measuring conditions. It is the demonstration that an instrument or a device produces results within specified limits when
compared to those produced by a standard that is traceable to a national or international standard. Balances, for instance, should be calibrated regularly, e. g. once a year.
I hope this information is of help for you.
Kind regards,
Yours sincerely,
Dr Ulrich Rose
Division III
EDQM
Council of Europe
http://www.edqm.eu
http://www.edqm.eu/store
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