Jenco Instruments
Jenco Instruments is an ISO9001 certified manufacturer of water quality meters and instruments such as pH meters, ORP meters, conductivity meters, TDS meters, dissolved oxygen meters, ion meters and temperature meters
http://www.jencoi.com

Elmetron
Oferujemy wysokiej jako¶ci przyrz±dy pomiarowe do pomiarów fizyko-chemicznych. pH-metry, konduktometry, jonometry, tlenomierze, termometry, wilgotno¶ciomierze do powietrza oraz grubo¶ciomierze
http://elmetron.com.pl/

FRER S.r.l.
FRER e' stata fondata nel 1980 con l'ambizione di costruire prodotti elettronici ai massimi livelli di affidabilita' e di fornirli ai propri Clienti tramite un servizio pre e post-vendita ineccepibile ed ineguagliabile.
http://www.frer.it/

Elmetron
Manufacturer of high quality pH meters, conductivity meters, ion meters, thermometers, humidity meters and thickness gauges.
http://www.elmetron.com.pl/ang

Divicom Inc.
Divicom sells surplus flowmeters flow meter Smith Brooks Daniel and metering skids for oil Terminals and Pipelines
http://www.oilmeter.com/

Radioactivity: Historical Figures
Focuses on four primary figures in the development of the understanding of nuclear structure and radioactivity, namely Wilhelm Conrad Roentgen, Antoine Henri Becquerel, Marie Sklodowska Curie, and Ernest Rutherford.
http://www.accessexcellence.org/AE/AEC/CC/historical_background.html

Natural Radioactivity
The Radiation Information Network (Idaho State U). Primordial, cosmogenic and man-made radiation sources. Radon accounts for 56% of the total effective dose to people in the US. Radioactivity in soil, building materials, and human bodies.
http://www.physics.isu.edu/radinf/natural.htm

Journal of Environmental Radioactivity
Publication of original research or review papers on any aspect of the occurrence of radioactivity in natural systems. Science Direct Elsevier Science on line journal.
http://www.sciencedirect.com/science?_ob=JournalURL&_cdi=5914&_version=1&_urlVersion=0&_userid=0&md5=55a45f26d8ab0c3c4e77e743a2ee619b

B Meters
Contatore Acqua B Meters srl, produttore italiano di contatori per acqua, contatori d'acqua, contatori acqua fredda e calda, contatori di calore. La gamma di prodotti comprende contatore per acqua a turbina nella versioni getto singolo e multiplo
http://www.bmeters.com/

Hioki USA Corporation
Manufacture of data acquisition, power meters, power quality analyzer (PQA), LCR meters, battery measurement, multi meters and field measuring instruments.
http://www.hiokiusa.com/