VZOR LLC is the leading Russian enterprise in development and production of measuring instruments for water chemical analysis including pure and ultra pure water. The MARK series analyzers are successfully exploited at power plants, centers of ecology control, laboratories of various profiles. VZOR offers a complement package of analytical equipment: on-line analyzers and portable meters for measuring the levels of dissolved oxygen, dissolved hydrogen, conductivity, acids and sodium compounds concentration, pH/ORP, sodium ions activity as well as auxiliary equipment and accessories. All our products are covered by manufacturer warranty and supported by technical service during the whole lifespan of equipment.