Canadian Natural Gypsum Rock Standards

ASO Design

CANADIAN CERTIFIED REFERENCE MATERIALS

NATURAL GYPSUM ROCK STANDARDS

Certified by: World-wide round robin with 29 participating laboratories.

Packaging: 100g bottles provided with a ‘Certificate of Analysis’.

MAJOR ELEMENTS IN WEIGHT PERCENT

ELEMENT	GYP-A	GYP-B	GYP-C	GYP-D
CaO	32.9	32.8	30.4	28.2
SO3	46.2	41.0	33.0	36.7
MgO	0.18	1.80	5.35	1.73
Al2O3	0.10	0.17	0.79	2.03
Fe2O3	0.05	0.07	0.40	1.08
P2O5	0.011	0.01	0.018	0.025
SiO2	0.45	1.05	3.5	8.7
K2O	0.021	0.05	0.36	0.54
Na2O	0.009	0.021	0.022	0.07
SrO	0.11	0.14	0.35	0.18
H2O+ comb.	19.4	17.80	14.37	16.39
H2O clays	-	-	-	0.37
CO2	0.47	5.0	11.2	3.6
% TOTAL:	99.90	99.91	99.76	99.62

The four natural gypsum rock samples were specially selected with respect to the present impurities, from three localities in Canada and from one in United States.

Trace Elements: Each gypsum has on average 26 - 30 ‘certified’ trace elements.

SHOW PICTURE OF STANDARDS

Download Certificate of Analysis

Price: U.S. $ 160.- per bottle