Example for calculating repeatability

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  • เผยแพร่เมื่อ 7 ก.พ. 2025
  • This video is from a free MOOC about LC-MS method validation which can be found in the following address: sisu.ut.ee/lcm...

ความคิดเห็น • 10

  • @himasha-r5j
    @himasha-r5j ปีที่แล้ว

    How do we know our repeatability value is good? How do we find about reproducibility using these values, can we use relative standard devaiation for this too?Is there any guidlines to make sure our repeatability and reproducibility in good ?plz help me

  • @nisalagunasekera9455
    @nisalagunasekera9455 2 ปีที่แล้ว

    Thank you for very informative presentation. Please let me know why "k" is not taken in to consideration when calculating Repeatability (multiple days; B23) and RSDpooled (B29)?

    • @riinrebane2205
      @riinrebane2205 2 ปีที่แล้ว +1

      Hi Nisala.
      It actually is taken into account in line 20. This is where we don't have n but (n-1) and we have summed these for the final formula, hence, "k" is taken into account. I hope this helps.
      With kind regards
      Riin

    • @nisalagunasekera9455
      @nisalagunasekera9455 2 ปีที่แล้ว

      @@riinrebane2205 thanks!

    • @usriabdalla4120
      @usriabdalla4120 ปีที่แล้ว

      Please I want know what is intermediate precision means or correctly equaitoin?

  • @arturniedzioka4007
    @arturniedzioka4007 ปีที่แล้ว

    Where in literature can I find this method? I want to use it in my paper to master degree but without legitimate source I can't. I get through MSA but it requires multiple appraisers, so I can't use it. i will really appreciate Yuor help.

    • @riinrebane2205
      @riinrebane2205 ปีที่แล้ว

      Hi.
      I think the best reference would be a Nordtest guide (www.nordtest.info/wp/wp-content/uploads/2018/04/NT_TR_569_ed5_1_Internal_Quality_Control_English.pdf)
      I hope this helps.
      With kind regards,
      Riin

  • @usriabdalla4120
    @usriabdalla4120 ปีที่แล้ว

    Hi madam
    I want analysis some sample by:
    1-Accuracy
    2-Precision
    3-Intermediate precision
    4-Specificity
    Kindly, could you tell me formal?
    Thank you

    • @validationofliquidchromato7864
      @validationofliquidchromato7864  ปีที่แล้ว +1

      Hello,
      Thank you for the question. Please refer to our MOOC materials which specifies and discusses the parameters you have mentioned in detail:
      sisu.ut.ee/lcms_method_validation/course-introduction
      All the best!

    • @usriabdalla4120
      @usriabdalla4120 ปีที่แล้ว

      @@validationofliquidchromato7864
      dear madam , thank you a lot for responding , the malarial is CO sample conc. is 2 ppm , i had reading in GC 5 inject on 3 days . how i do calculate validation.
      i ask of formal.