Seminar: Updates on SMR and SMR Laboratory Integration … 2-Crosscheck... · 2017-08-01 ·...
Transcript of Seminar: Updates on SMR and SMR Laboratory Integration … 2-Crosscheck... · 2017-08-01 ·...
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28 July 2017BGA, Ampang
Seminar: Updates on SMR and SMR
Laboratory Integration System (SLIS)
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Content
Element of PT Programme
Definition and terminology in precision statement
Why choose 2010-2016?
Summary of performances in SMR PT Programme
Summary
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A valid, well-written test method that has been fully developed
PT Scheme and Requirements
PT Sample
Organiser or PT Provider
Participating laboratories
Statistical method of analysis- Type of precision to be obtained from the
PT program
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List of participants in SMR PT Programme
22 SMR Laboratories + 2
other labs
Global Testing and Consultancy for Rubber, Malaysian Rubber Board
Hevea KB Sdn.Bhd
Chuan Lee Rubber Sdn.Bhd
Felda PKBI
Felda Pasir Besar
Hock Hin ( Muar ) Rubber Co. Sdn. Bhd.
Kota Trading Co. Sdn. Bhd., Batu Pahat
Kota Trading Co. Sdn. Bhd., Tampin
Lee Rubber Co.(Pte) Ltd. (Bentong)
Lee Rubber Co.(Pte.) Ltd. (B.Mertajam)
Lee Rubber Co. (Pte.) Ltd. (K.Kangsar)
Lee Rubber Co.(Pte.) Ltd. (Labis)
Lee Rubber Co.(Pte.) Ltd. (K.Krai)
Malayan Testing Laboratory Sdn. Bhd., Sg. Petani
Malayan Testing, K.L.
Seng Hin Rubber (M) Sdn. Bhd.
Syarikat Tenaga Gemas Sdn. Bhd.
Technology & Quality Control Centre (TQCC)
Mech Chem Laboratory Sdn Bhd.
Sime Darby Research Centre Sdn.Bhd.
Sabah Rubber Industry Board
The Rubber Consultant, T.A.R.C, UK
Continental Tyre Technology Centre Malaysia Sdn. Bhd
Eurofins North Malaya Laboratory Sdn. Bhd
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What is Precision?
The statement offers guidelines regarding the type of variability that can be expected among test results when the method is used in one or more reasonably competent laboratories.
Precision—the closeness of agreement among test results obtained under prescribed conditions- ISO 9272: 2005
A precision statement allows potential users of the test method to assess, in general terms, its usefulness in proposed applications.
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Precision Statement
Definition of repeatability,r, sr, (r )
Definition of Reproducibility (sR, R, (R )
Standard Deviation (SD)
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Repeatability
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Reproducibility
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r :precision under repeatability conditions
repeatability conditions, n : conditions where independent test results are obtained with the same method on identical test items in the same laboratory by the same operator using the same equipment within short intervals of time.
Definition of repeatability,r, sr, (r )
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repeatability limit (r), n—the value below which the absolute difference between two individual test results obtained under repeatability conditions may be expected to occur with a probability of approximately 0.95 (95 %).
repeatability standard deviation, (sr), n—the standard deviation of test result obtained under repeatability conditions.
Definition of repeatability,r, sr, (r )
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Definition of reproducibility, R—precision under reproducibility conditions.
reproducibility conditions, n—conditions where test results are obtained with the same method on identical test items in different laboratories with different operators using different equipment.
Definition of Reproducibility (sR, R, (R )
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reproducibility limit (R), n—the value below which the absolute difference between two test results obtained under reproducibility conditions may be expected to occur with a probability of approximately 0.95 (95 %).
reproducibility standard deviation (sR), n—the standard deviation of test results obtained under reproducibility conditions.
Definition of Reproducibility (sR, R, (R )
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Precision Statement
• Standard Deviation (SD)
is a measure of the dispersion of a set of data from its mean.
• 2 Standard Deviation (2SD)
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Why choose 2010-2016?
A Youden Plot was used to analyse Round Robin data from 1975 to 2010.
A web-based system produced in-house by the Malaysian Rubber Board (MRB) for
analyzing data obtained from the Proficiency Testing (PT) program
2010 - now
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Youden Analysis
A Youden Plot was used to analyse Round Robin data from 1975 to 2010.
Youden Analysis which has been previously used in the interlaboratory comparison program for the SMR/TSR was unable to provide the precision statement of the test method directly as required by ISO/TR 9272 and ASTM E691 respectively
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E-Precision
A web-based system produced in-house by the Malaysian Rubber Board (MRB) for
analyzing data obtained from the Proficiency Testing (PT) program
2010 - now
The e-Precision which is a software system produced by MRB and capable of hastening the process of organizing ITP or PT programs, from registration to delivery of PT reports, online. It is also capable of analyzing PT data and treating outliers or bad data for generation of a precision statement.
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on Reproducibility
• Due to enormous and massive data in the study, the presentation only focus on Reproducibility limit (R ) .
reproducibility limit (R), n—the value below which the absolute difference between two test results obtained under reproducibility conditions may be expected to occur with a probability of approximately 0.95 (95 %).
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Objective • To analyse the performance of SMR Laboratories
(2010-2016) based on the precision statement generated by the e-Precision.
• To demonstrate that the e-Precision is a reliable system in generating precision values in terms of repeatability and reproducibility.
• Evaluation of the performance – important for monitoring laboratories’ continuous performance ( R).
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Performance of (R ) for Volatile Matter 2010-2016 (Blended Series-Material A)
Performance of (R ) VM Blended Series (Material A)
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Performance of (R ) for Volatile Matter 2010-2016 (Blended Series-Material B)
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Performance of (R ) for Volatile Matter 2010-2016 (Unblended Series-Material A)
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Performance of (R ) for Volatile Matter 2010-2016 (Unblended Series-Material B)
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Performance of (R ) for Ash 2010-2016 (Unblended Series-Material A)
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Performance of (R ) for Ash 2010-2016 (Unblended Series-Material B)
Performance of (R ) for Ash Unblended Series-Material B
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Performance of (R ) for Ash 2010-2016 (Blended Series-Material A)
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Performance of (R ) for Ash 2010-2016 (Blended Series-Material B)
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Performance of (R ) for Nitrogen 2011-2016 (Unblended Series-Material A)
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Performance of (R ) for Nitrogen 2011-2016 (Unblended Series-Material B)
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Performance of (R ) for Nitrogen 2010-2016 (Blended Series-Material A)
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Performance of (R ) for Nitrogen 2010-2016 (Blended Series-Material B)
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Performance of (R ) for P0 2011-2016 (Unblended Series-Material A)
Performance of ( R ) for P0 2011-2016Unblended Series-Material A
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Performance of (R ) for P0 2011-2016 (Unblended Series-Material B)
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Performance of (R ) for P0 2010-2016 (Blended Series-Material A)
Performance of ( R) for P0 2010-2016Blended Series- Material A
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Performance of (R ) for P0 2010-2016 (Blended Series-Material B)
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Performance of (R ) for PRI 2011-2016 (Unblended Series-Material A)
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Performance of (R ) for P0 2011-2016 (Unblended Series-Material B)
Performance of ( R) for PRI 2011-2016Unblended Series-Material B
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Performance of (R ) for P0 2010-2016 (Blended Series-Material A)
Performance of ( R ) for PRI 2010-2016Blended Series-Material A
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Performance of (R ) for P0 2010-2016 (Blended Series-Material B)
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Performance of (R ) for Dirt 2010-2016 (Unblended Series-Material A)
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Performance of (R ) for Dirt 2010-2016 (Unblended Series-Material B)
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Performance of (R ) for Dirt 2010-2016 (Blended Series-Material A)
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Performance of (R ) for Dirt 2010-2016 (Blended Series-Material B)
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Summary
• The Analysis have shown that all the SMR laboratories performances in terms of reproducibility, (R) from 2010 to 2016 are within 95% (2SD).
• The analysis obtained has demonstrated that e-Precision is capable of generating reliable values in terms of reproducibility (R ).
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