Results 31 to 40 of about 383,968 (310)

Preparation of Trace Gold and Gold Ore Reference Materials

open access: yesYankuang ceshi, 2021
BACKGROUND From 1986 to 2007, different grades of trace gold certified reference materials (background grade, anomaly grade, medium grade and high grade) and mineral gold certified reference materials (mineralization grade, cutoff grade and concentrate ...
YANG Rong   +3 more
doaj   +1 more source

CERTIFICATION REPORT The certification of the cold filter plugging point (CFPP) and the cloud point (CP) in biodiesel from rapeseed: ERM®-EF002 [PDF]

open access: yes, 2015
This report describes the production of ERM-EF002, which is a 100 % rapeseed oil based fatty acid methyl ester (biodiesel) material certified for cold filter plugging point (CFPP) and cloud point (CP).
LINSINGER Thomas   +1 more
core   +1 more source

Development of decahydronaphthalene reference material for low flash point measurements

open access: yesEgyptian Journal of Petroleum, 2021
Certified reference materials are an essential tool for calibration of testing equipment, validation of analytical methods and ensuring quality of test results.
H.E. Ahmed, Ibrahim F. Tahoun, S. Zakel
doaj   +1 more source

Certification of Reference Materials of Cotton Seed Powder with Different Mass Fractions of the Cotton Event T304-40 - Certified Reference Materials ERM®-BF429 (ERM®-BF429a, ERM®-BF429b, ERM®-BF429c) [PDF]

open access: yes, 2010
This report describes the processing and certification of three cotton seed powder Certified Reference Materials (CRMs) containing different mass fractions of genetically modified (GM) T304-40 cotton (ERM-BF429a, b, c).
CORBISIER Philippe   +4 more
core   +1 more source

Preparation and certification of wheat flour reference material for tenuazonic acid and tentoxin using isotope dilution- liquid chromatography-tandem mass spectrometry

open access: yesZhongguo shipin weisheng zazhi, 2021
ObjectiveA method for the preparation and certification of the reference material of tenuazonic acid(TeA) and tentoxin (TEN) in wheat flour was developed.MethodsThe reference material of TeA and TEN in wheat flour was prepared from grain which naturally ...
XIE Ji'an   +6 more
doaj   +1 more source

Certification of the mass fractions of As, B, Cd, Cr, Cu, Hg, Mn, Mo, Ni, Pb, Sb, Se, Sn and Zn in rye grass - Certified Reference Material ERM®-CD281 [PDF]

open access: yes, 2010
This report describes the preparation and certification of the rye grass Certified Reference Material (CRM) ERM-CD281. This CRM replaces the exhausted predecessor BCR-281.
HELD Andrea, PEREZ PRZYK Elzbieta
core   +1 more source

The problem of improving the quality of seriously issued certified reference materials of the composition of gas mixtures

open access: yesСтандартные образцы, 2019
Currently, in the Russian Federation, the metrological traceability of certified reference materials of the composition of gas mixtures in cylinders under pressure produced by manufacturers of certified reference materials is carried out in accordance ...
L. A. Konopelko   +2 more
doaj   +1 more source

Certification of a Reference Material with Eschericia Coli O157 (NCTC 12900) at a level of 4 Colony forming Unit per Material Sphere, IRMM-351 [PDF]

open access: yes, 2008
This report describes the certification of a reference material (IRMM-351) of Escherichia coli O157. Certified Reference Materials (CRMs) for microbiological analysis are indispensable tools for development and validation of detection methods and for the
BREMSER Wolfram   +5 more
core   +1 more source

Certified reference material to water content determination in bioethanol fuel

open access: yesQuímica Nova, 2012
Bioethanol is a strategic biofuel in Brazil. Thus, a strong metrological basis for its measurements is required to ensure the quality and promote its exportation. Recently, Inmetro certified a reference material for water content in bioethanol.
Janaína M. Rodrigues   +6 more
doaj   +1 more source

Preparation of Certified Reference Materials for Soil Limit Water Content

open access: yesYankuang ceshi, 2021
BACKGROUND Soil limit water content is an important basis for fine-grained soil classification and engineering property evaluation. Additionally, it is an important evaluation index for clay exploration and industrial utilization. Inaccurate test results
ZHAO Xiu-feng   +4 more
doaj   +1 more source

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