Profile: Jenco Instruments Inc. manufactures pH, ORP, conductivity, dissolved oxygen, ion instruments for field, laboratory and industrial applications. We are an ISO 9001 certified company. We offer handheld digital thermometer, panel mount digital temperature transmitter, pocket thermometer, pH/mV/temp./ion bench meter, dissolved oxygen analyzer, dissolved oxygen benchtop meter, dissolved oxygen handheld meter, conductivity/salinity/temperature benchtop meter, salinity pocket pen style tester, high performance pH/conductivity/salinity/mV/temperature handheld meter, conductivity analyzer, conductivity controller and conductivity pocket pen style tester.