The following clients have
Applied Techniques Radon Instrumentation.
Indeed many have several units!

University of Alaska

University of Washington

University of Oregon

University of Southern California

University of California

Lawrence Livermore Laboratory

Scripps Institute of Oceanography

Woods Hole Oceanographic Institute

University of Texas

University of Florida

University of South Florida

University of Miami

Princeton University

Cleveland State University

University of Connecticut

University of Delaware

University of Hawaii

University of North Carolina

University of New York at Stony Brook

State University of New York - Environmental Sciences & Forestry

University of Wisconsin

University of Rhode Island

Cornell College - Iowa

Gordon College - Massachusetts

Universidad de Concepcion - Concepcion, Chile

ERM / Environmental Radioactivity Measurements

United States Geological Survey - Denver

United States Geological Survey - South Dakota

United States Geological Survey - Georgia

United States Geological Survey - Maryland

Schlumberger - Texas

Montgomery Laboratories - California

Wilfred Lanier University - Canada

McGill University - Canada

Fresh Water Institute - Canada

Department of Fisheries - Canada

Dalhousie University - Canada

WAPDA-TARBELA Dam Project - Pakistan

Physical Research Laboratories - India

National Institute of Oceanography - India

CREGU Institute - France

EAWAG Institute - Switzerland

Johnson Matthey Laboratories - England

Department of Industry - England

AERE Institute - England

Plymouth Marine Laboratories - England

Harwell UK Atomic Energy Authority - England

Fisheries Radiological Laboratories - England

Directorate of Fisheries Research - England

Centre for Environment, Fisheries and Aquaculture Science - England

Institute of Oceanographic Sciences - England

Cambridge University - England

Institute for Polar & Marine Research - Germany

The Hebrew University of Jerusalem - Israel

Infotech Systems(Agent) for Chungnam National University - S. Korea

Infotech Systems(Agent) for Korea Ocean R & D Institute - S. Korea

Alpine Ocean Seismic Survey(Agent) for Tarbela Dam Project - Pakistan

Alpine Ocean Seismic Survey(Agent) for NIRS - Japan