homogeneity study
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Author(s):  
Shanshan Yin ◽  
Ting Tian ◽  
Christian L. Weindl ◽  
Kerstin S. Wienhold ◽  
Qing Ji ◽  
...  

2021 ◽  
Vol 23 ◽  
pp. 100320
Author(s):  
Joe Meikle ◽  
Kylie Jones ◽  
Sarah L. Cresswell ◽  
Sue E. Boyd ◽  
James F. Carter

Author(s):  
Florbela A. Dias ◽  
Carlos J. Costa

The production of Certified Reference Materials (CRM), according to the international standard ISO 17034:2016, has been playing an increasingly role in measurements and accreditation activities of entities/laboratories, with special focus on the field of chemical, biological and clinical tests and physical properties. The IPQ LGR is responsible for the production of various types of CRM, namely gas mixture standards of ethanol in nitrogen (C2H5OH/N2), by gravimetric method according to the international standard ISO 6142-1:2015, and certification by non-dispersive infrared spectroscopy (NDIR) in accordance with ISO 6143:2001. According to ISO 17034:2016, these mixtures have to be evaluated regarding the homogeneity, which is one of the fundamental requirements for the production of CRM. In this communication, the results of the homogeneity study of standards gas mixtures of ethanol in nitrogen are presented, according to a validated measurement procedure, in order to guarantee the traceability to SI units and also to meet the requirements of ISO 17034:2016. The statistical treatment of the data is presented through analysis of variance ANOVA.


Measurement ◽  
2018 ◽  
Vol 128 ◽  
pp. 1-12 ◽  
Author(s):  
Małgorzata Rutkowska ◽  
Kinga Kochańska ◽  
Lekhanath Kandel ◽  
Gabriela Bajger-Nowak ◽  
Marta Słomińska ◽  
...  

2018 ◽  
Vol 13 (04) ◽  
pp. P04002-P04002
Author(s):  
T. Billoud ◽  
C. Leroy ◽  
C. Papadatos ◽  
M. Pichotka ◽  
S. Pospisil ◽  
...  
Keyword(s):  
X Rays ◽  

Author(s):  
Jinkun Yang ◽  
Yang Yang ◽  
Qingsheng Miao ◽  
Mingmei Dong ◽  
Fangfang Wan

2017 ◽  
Vol 44 (11) ◽  
pp. 6047-6052 ◽  
Author(s):  
Ying Xing ◽  
Xianwei Wu ◽  
Yongqiang Li ◽  
Jun Zhao
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