Home > QM, accreditation, proficiency tests > Round robin tests XRF-analysis > 051-2007-geopt-21-mgt-1
Logo

Round robin tests XRF-analysis XRF Round-robin test GeoPT21 - MGT-1, Granite

Study organized by:
International Association of Geoanalysts and Geostandards Newsletter - GeoPT21
Material of proficiency test:
MGT-1, Granite
Study finished:
2007 - 8
Literature:
Preliminary Report - GeoPT21 Proficiency Testing Round

major elements [wt %]

CRBRV1sRVZ-Score
Na₂O3,8203,6500,060
MgO0,3900,3800,009
Al₂O₃14,13014,0300,189
SiO₂72,25072,3500,760
P₂O50,1380,1300,004
K₂O4,6804,6700,074
CaO1,1901,1500,022
TiO₂0,2930,2900,007
Fe₂O₃ tot2,4702,4300,042
MnO0,0550,0600,002
L.O.I.0,490

trace elements [µg/g]

CRBRV1sRVZ-Score
As2,802,320,16
Ba342,00344,0011,40
Ce66,0063,062,70
Co5,002,730,19
Cr215,00186,706,80
Ga22,0022,001,10
Hf5,004,690,30
La34,0029,221,41
Mo3,003,060,21
Nb15,0015,240,81
Nd30,005,921,28
Ni2,0025,420,36
Pb29,00271,941,25
Pr5,007,080,42
Rb287,00271,909,40
Sm5,005,460,34
Sn7,0013,030,71
Sr109,00110,809,40
Th19,0019,190,98
U3,005,430,34
V14,0014,010,75
Y22,0024,671,22
Zn56,0054,562,39
Zr165,00168,416,23

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

Asbestos Analysis0

Reliable analysis of asbestos with SEM/EDXORDER NOW!

Order inquiry & contact

  • Tel.: +49 (0)5505 // 940 98-0
  • fax: +49 (0)5505 // 940 98-260

News

Mar 30, 2021

Dealing with asbestos: Ignorance does not protect against punishment – first check, then renovate

Time and again, contractors and do-it-yourselfers have to answer to the courts for failing to comply with occupational safety and environmental protection measures in connection with asbestos. ... read more

Feb 3, 2021

Asbestos discovered in talc-based U.S. cosmetic products

In a recent technical paper in the journal Environmental Health Insights, U.S. scientists from the Environmental Working Group Washington and the Scientific Analytical Institute Greensboro warn of asbestos in cosmetic products. ... read more

Jan 13, 2021

Results of current round-robin tests published

In 2020, CRB has again successfully participated in a series of round-robin tests for asbestos analysis and X-ray fluorescence analysis. ... read more

';