Round-robin test GeoPT26 - OPC-1, Cement - CRB GmbH
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Round robin tests XRF-analysis XRF Round-robin test GeoPT26, England - OPC-1, Portland Cement

Study organized by:
International Association of Geoanalysts and Geostandards Newsletter - GeoPT26
Material of proficiency test:
OPC-1, Ordinary Portland Cement)
Study finished:
2010 - 1
Literature:
Preliminary Report - GeoPT26 Proficiency Testing Round

major elements [wt %]

CRBRV1sRVZ-Score
Na₂O   
MgO2,6002,5400,050
Al₂O₃4,6804,5500,072
SiO₂22,20021,8500,275
P₂O50,0440,0440,001
S*0,9800,9500,310
K₂O0,3700,3400,008
CaO63,16062,9000,674
TiO₂0,3400,3180,008
Fe₂O₃ tot3,2703,1900,054
MnO0,4100,4040,009
L.O.I.*1,0901,2300,370

trace elements [µg/g]

CRBRV1sRVZ-Score
As2,004,600,30
Ba482,00512,0016,00
Ce50,0049,002,20
Cr*185,00186,0040,00
Cu26,0023,701,20
Ga7,007,000,40
F*640,00720,00200,00
Hf2,502,100,20
La70,0026,001,30
Ni94,0087,003,60
Pb9,007,200,40
Pr12,006,200,40
Rb20,0014,700,80
Sm3,005,000,30
Sr130,00118,004,60
V65,0064,002,70
Y14,0016,000,80
Zn26,0028,001,30
Zr79,0081,003,40

Legend

CRB
results CRB
cooperative test
results collaborative study
1s-RV
Standard deviation collaborative study
Z-Score
Difference of measured value from mean study
*
Value not certified

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