SL-1 Certificate of Analysis

Certified Reference Material: Blast Furnace Slag

Printable version of the certificate (PDF, 190 kb)

SL-1 was prepared in 1975 from material donated by the Steel Company of Canada Ltd. at Hamilton, Ontario, for use in analytical laboratories associated with the iron and steel industry.

Although the interlaboratory program involving 21 laboratories yielded results for 13 constituents, only 6 met the criteria for certification; values for the other are provisional.

Certified Values and 95% Confidence Intervals
Constituents wt %
SiO2 35.73 ± 0.13
CaO 37.48 ± 0.18
MgO 12.27 ± 0.15
Al2O3 9.63 ± 0.09
Tot Fe as FeO 0.92 ± 0.04
S 1.26 ± 0.03

A copy of CANMET Report 77-57, "Blast furnace slag SL-1: Its preparation for use as a certified reference material", will be issued with each order of SL-1.

Provisional Values
Constituent wt %
TiO2 0.38
MnO 0.86
Na2O 0.39
K2O 0.51

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