U.S. Representatives

Alabama

Neutronics Inc.

Alaska

Neutronics Inc.

Arizona

Aztec Enterprises

Arkansas

Neutronics Inc.

California

Neutronics Inc.

Colorado

Aztec Enterprises

Connecticut

Delaware

Florida

Neutronics Inc.

Georgia

Neutronics Inc.

Hawaii

Neutronics Inc.

Idaho

Aztec Enterprises

Illinois

Neutronics Inc.

Indiana

Schlemmer Assocs.

Iowa

Neutronics Inc.

Kansas

Neutronics Inc.

Kentucky

Schlemmer Assocs.

Lousiana

Flowmaster Inc.

Maine

Maryland

Massachusetts

Michigan

Anger Associates Inc.

MINNESOTA

Schlemmer Assocs.

Mississippi

Flowmaster Inc.

Missouri

Neutronics Inc.

Montana

Aztec Enterprises

Nebraska

Neutronics Inc.

Nevada

Neutronics Inc.

New Hampshire

New Jersey

New Mexico

Aztec Enterprises

New York

George O. Miller CO.

North Carolina

Controls & Instrumentation Company Inc.

North Dakota

Neutronics Inc.

Oklahoma

Neutronics Inc.

Ohio

Schlemmer Assocs.

Oregon

Tritek Northwest

Pennsylvania

Schlemmer Assocs.

Pennsylvania

Puerto Rico

Badrena & Perez Inc.

Rhode Island

South Carolina

Controls & Instrumentation Company Inc.

South Dakota

Neutronics Inc.

Tennessee

Controls & Instrumentation Company Inc.

Texas

Flowmaster Inc.

Utah

Aztec Enterprises

Vermont

Virginia

Washington

Tritek Northwest

West Virginia

Schlemmer Assocs.

Wisconsin

Neutronics Inc.

Wyoming

Aztec Enterprises

International Representatives

China

ZHUHAI EAU TECHNOLOGY CO., LTD

Japan

TEKHNE Corporation

Korea

Central Micronics Co. Ltd.

Malaysia

Cesstech (S) Pte. Ltd

Singapore

Cesstech (S) Pte. Ltd

Taiwan R.O.C.

KS Sunray Instruments Co., Ltd.

Sunray Science Co. Ltd.

Thailand

MB Sales and Services Co., Ltd.