Comparison
Comparison close
Results

CCM.FF-K4.2.2011, EURAMET.M.FF-K4.2.2014, and AFRIMETS.M.FF-K4.2.2015

MEASURAND                            Water volume

NOMINAL VALUE                    100 µL

 

Degrees of equivalence represented by Di = (xI - xR) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in µL.

 

 

 

 

Five micropipettes, serial numbers 354828Z, 354853Z, 354864Z, 354868Z and 354872Z, were used in CCM.FF-K4.2.2011.

CCM.FF-K4.2.2011 and EURAMET.M.FF-K4.2.2014:   Data obtained for 354828Z are listed here, used in both comparisons. For other micro- pipettes, see the Final Reports.

CCM.FF-K4.2.2011and AFRIMETS.M.FF-K4.2.2015:    Data obtained for 354868Z are listed here for AFRIMETS.M.FF-K4.2.2015, used in CCM.FF-K4.2.2011and AFRIMETS.M.FF-K4.2.2015. For other micro- pipettes, see the Final Reports.

Comparison
Comparison close
Results

CCM.FF-K4.2.2011, EURAMET.M.FF-K4.2.2014, and AFRIMETS.M.FF-K4.2.2015

MEASURAND                            Water volume

NOMINAL VALUE                    100 µL

 

Degrees of equivalence represented by Di = (xI - xR) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in µL.

 

 

 

 

Five micropipettes, serial numbers 354828Z, 354853Z, 354864Z, 354868Z and 354872Z, were used in CCM.FF-K4.2.2011.

CCM.FF-K4.2.2011 and EURAMET.M.FF-K4.2.2014:   Data obtained for 354828Z are listed here, used in both comparisons. For other micro- pipettes, see the Final Reports.

CCM.FF-K4.2.2011and AFRIMETS.M.FF-K4.2.2015:    Data obtained for 354868Z are listed here for AFRIMETS.M.FF-K4.2.2015, used in CCM.FF-K4.2.2011and AFRIMETS.M.FF-K4.2.2015. For other micro- pipettes, see the Final Reports.

AFRIMETS.M.FF-K4.2.2015
Metrology area, Sub-field Mass and related quantities, Fluid Flow
Description Calibration of micropipettes
Time of measurements 2014 - 2016
Status Approved
Final Reports of the comparisons
References

AFRIMETS.M.FF-K4.2.2015 Technical Protocol

Measurand Volume: 100 µL
Transfer device Three micro pipettes of nominal volume 100 µL
Comparison type Key Comparison
Consultative Committee CCM (Consultative Committee for Mass and Related Quantities)
Conducted by AFRIMETS (Intra-Africa Metrology System)
Comments Results published on 5 August 2020
 
Pilot institute NIS
National Institute for Standards
Egypt
Contact person Amr Sadek
dr_amrsadek@hotmail.com
+201004995237
First Name Last Name
wwww@ww.www +356719836 Institute 1 Institute 1 Khmelnitskiy
Pilot laboratory
NIS

National Institute for Standards, Egypt, AFRIMETS

BOBS

Botswana Bureau of Standards, Botswana, AFRIMETS

GSA

Ghana Standards Authority, Ghana, AFRIMETS

IPQ

Instituto Portugues da Qualidade, Portugal, EURAMET

KEBS

Kenya Bureau of Standards, Kenya, AFRIMETS

NMI-SIRDC

National Metrology Institute (NMI-SIRDC), Zimbabwe, AFRIMETS

NMISA

National Metrology Institute of South Africa, South Africa, AFRIMETS

ZABS

Zambia Bureau of Standards, Zambia, AFRIMETS

Comparison
Comparison close
Results

CCM.FF-K4.2.2011, EURAMET.M.FF-K4.2.2014, and AFRIMETS.M.FF-K4.2.2015

MEASURAND                            Water volume

NOMINAL VALUE                    100 µL

 

The key comparison reference value xR and the associated expanded uncertainty (k = 2) UR for each pipette is basically obtained from the weighted means of the results.

For each micropipette, the degree of equivalence of laboratory i with respect to the key comparison reference value is computed according to equations 8, 9 and 10 on page 11 of the Final Report, and is given by a pair of terms, both expressed in µL: Di and Ui, its expanded uncertainty (k = 2).

 

Linking EURAMET.M.FF-K4.2.2014 to CCM.FF-K4.2.2011

TRANFERT INSTRUMENTS: Two micropipettes, serial numbers 354828Z and 354853Z

EURAMET.M.FF-K4.2.2014 is linked to CCM.FF-K4.2.2011 via IPQ, having participated in both comparisons.

 

Linking AFRIMETS.M.FF-K4.2.2015 to CCM.FF-K4.2.2011

TRANFERT INSTRUMENTS: Two micropipettes, serial numbers 354868Z and 354872Z

AFRIMETS.M.FF-K4.2.2015 is linked to CCM.FF-K4.2.2011 via IPQ, having participated in both comparisons.

Comparison
Comparison close
Results

CCM.FF-K4.2.2011, EURAMET.M.FF-K4.2.2014, and AFRIMETS.M.FF-K4.2.2015

MEASURAND                            Water volume

NOMINAL VALUE                    100 µL

 

CCM.FF-K4.2.2011

Lab i       volume measured by laboratory i after correction to the standard atmospheric pressure
Lab i        expanded uncertainty (k = 2) of Lab i

 

EURAMET.M.FF-K4.2.2014

TRANFERT INSTRUMENTS: Two micropipettes, serial numbers 354828Z and 354853Z

The measurement results obtained in EURAMET.M.FF-K4.2.2014 are listed in table 10 on page 11 of the EURAMET.M.FF-K4.2.2014 Final report.

 

AFRIMETS.M.FF-K4.2.2015

TRANFERT INSTRUMENTS: Two micropipettes, serial numbers 354868Z and 354872Z

The measurement results obtained in AFRIMETS.M.FF-K4.2.2015 are listed in the AFRIMETS.M.FF-K4.2.2015 Final report.