Permissible Brands of Microsilica

Company	Brand Name	Form	Manufacturers
Axim Concrete Technologies, Inc.8282 Middlebranch Rd. Middlebranch, OH 44652 P/S Code 6502-01	CATEXOL SF-D	Densified	Elkem Materials, Alloy, WV
Elkem Materials P.O. BOX 266 Pittsburgh, PA 15230 P/S Code 6643-01	EMS-970 S EMS-970 DA	Slurry- 52% Densified	Elkem Materials, Alloy, WV
Euclid Chemical 19218 Redwood Rd. Cleveland, OH 44110-2799 *P/S Code 6511-01*	EUCON MSA	Densified	Elkem Materials, Alloy, WV
W.R. Grace & Co. Ms. Denise Preston 62 Whittemore Ave. Cambridge, MA 02140-1692 P/S Code 6517-01	FORCE 10,000	Densified Slurry- 50%-52%	Norchem Concrete Hauppauge, NY Elkem Materials Alloy, WV
Hydration Kontrol Daniel J. Hollman 4443 U.S. 27 South Alexandria, KY 41001 P/S Code 6521-01	HY-KON EMS-970 S HY-KON EMS-970DA	Slurry-52% Densified	Elkem Materials Alloy, WV
Master Builders, Inc. Francis McNeal 23700 Chagrin Blvd. Cleveland, OH 44122-5554 P/S Code 6528-01	RHEOMAC SF100 RHEOMAC SF110	Densified Slurry-52%	Norchem Concrete Prod. Hauppauge, NY
RussTech, Inc. Gary Russell 11208 Decimal Drive Louisville, KY 40299 *P/S Code 6546-01*	RUSSTECH CSF	Densified	Elkem Materials Alloy, WV
Sika Corp. 201 Polita Ave. Lyndhurst, NJ 07071 201-933-8801 P/S Code 6548-01	SIKACRETE 950DP SIKACRETE 950 SIKACRETE 950A	Densified Slurry 45% +2% Slurry 52.5%+/- 2.5%	Elkem Materials Alloy, WV Norchem Concrete Prod. Hauppauge, NY

In General, any brand of microsilca is acceptable as long as the label indicates that it is DENSIFIED. There are only two manufacturers of silica fume worldwide so all the DENSIFIED forms are essentially the same...go for the best price! Silica Fume is cheaper in Canada and Europe than in the USA.