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HISTORY/GENERAL USES <br /> Soil Water Samplers had their origin back in 1961 when we coop- <br /> erated with Dr. George H.Wagner at the University of Missouri to <br /> manufacture a porous ceramic cup for collecting soil water samples. <br /> The outgrowth of this work was our first commercial Soil Water <br /> Sampler, Model 1900 Soil Water Sampler. Since that time, these <br /> samplers have been generally accepted as an ideal tool for in situ <br /> collection of soil water samples for a great variety of soil moisture <br /> monitoring work. <br /> The initial and most extensive use of these Samplers was made by <br /> Pennsylvania State University, largely under the direction of Dr. <br /> L.T.Kardos and others,on the Pennsylvania Waste Water Project. <br /> Modifications of the original 1900 Soil Water Sampler by Richard <br /> R. Parizek and Burke E. Lane at Pennsylvania State University, <br /> reported on in the Journal of Hydrology, produced a pressure- <br /> vacuum type unit. Since that time,we have made available com- <br /> mercially the Model 1920 Pressure-Vacuum Soil Water Sampler. <br /> Some of our Soil Water Samplers have been in continuous use for <br /> several years and still yield satisfactory soil moisture samples. <br /> All of our ceramics are made from formulations which contain vari- <br /> ous proportions of kaolin,talc,alumina,ball clay, and other felds- <br /> pathic materials, using proprietary formulas developed through <br /> research and experience accumulated over more than 4 decades. <br /> Our samplers find applications not only in research work such as <br /> quantitative chemical analysis of soil water,but also for pollution <br /> control purposes in monitoring moisture under sanitary landfills, <br /> irrigated areas with wastewater, and areas where reclaimed or <br /> recycled water is used on a routine basis to assure compliance with <br /> government standards. <br /> Soilmoisture's line of Soil Water Samplers has proven to be an <br /> excellent and reliable means for obtaining soil water samples from <br /> both saturated and unsaturated soils at depths ranging up to sev- <br /> eral hundred feet. <br /> SOILMOISTURE EQUIPMENT CORP. 3 <br /> P.O.Box 30025,Santa Barbara,California 93105 USA <br /> Phone:(805)969-3525•Fox:(805)683-2189 SOILMOISTURE <br /> e-mail:soles@soilmoisture.com•Web:http://www.soilmoisture.com <br />