Gradko Environmental are market leaders in the supply and analysis of ambient air pollution monitoring products.Our customers include Environmental Consultants, Government Agencies, Local Authorities and Educational Institutes on a worldwide basis.We specialise is providing low cost, easy to use products for air sampling for a wide range of applications.  Our products are now available for many pollutants and our research into new equipment or applications is ongoing. Gradko International are specialists in the manufacture of small bore peristaltic pump tubing and transmission tubing.  We are a volume OEM supplier to many pump manufacturers worldwide, providing dedicated tubing ranges for their pumps.  We also supply tubing directly to end users of medical, laboratory and industrial equipment.Our products include PVC PhthalateFree®, Solva, Silicone, Pharmaprene®, Clearaprene®, TPE's, Fluoroelastomers, PTFE and Polyethylene tubing. Gradko Forensics offer a wide range of forensic products and services including Laboratory drug analysis, Detector Dog Training aids, 'Scentlogix™' synthetic Security Dog training aids, 'Mistral™' Drug detection products, 'Field Forensics™' Explosive detection products and Urine Drug detection testing kits.

Gradko Environmental are market leaders in the supply and analysis of ambient air pollution monitoring products.about the departmentEconomics is the study of the ways in which society allocates its resources among alternative uses and the consequences of these decisions. The areas of inquiry deal with a varied range of topics such as international trade, domestic and international financial systems, labor-market analysis, and the study of less-developed economies. Broadly speaking, the goal of an economics program is to train students to think analytically about social issues, and as such provide a solid foundation for further study and careers in economics as well as for multiple other pursuits.The Columbia faculty in economics continue a distinguished tradition of research in a wide range of fields, from pure theory to applied subjects, and have achieved major distinctions for their work. The department's Ph.D. program attracts top-notch degree candidates from around the world. Latest NewsCalendar of Events

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