MULTIPARAMETER WATER QUALITY METER For scientists and professionals who need precise water content determination from 1 ppm to 5%, the HI904 is a reliable Coulometric Karl Fischer titrator that gives results in minutes. Unlike volumetric Karl Fischer titrators, the HI904 features an precision titrant generation system and a fully sealed titration vessel for unmatched accuracy.   A Better Coulometric Karl Fischer Titrator Experience Our friendly technical consultants take pride in helping make your titrator selection easy – every step of the way. Our experts are here to guarantee you have a positive experience, from onsite installation and training to customization and continued support.   Titration Specifications Range 1 ppm to 5% Resolution 0.1ppm to 0.0001% Result Units %, ppm, ppt, mg/g, μg/g, mg, μg, mg/mL, μg/mL, mg Br/100g, g Br/100g, mg Br, g Br Sample Types liquid or solid with external dissolution / extraction Pre-Titration Conditioning automatic Background Drift Correction automatic or user-selectable value Endpoint Criteria fixed mV persistence, relative drift stop or absolute drift stop Dosing dynamic Result Statistic mean, standard deviation Dosing System Specifications Generator Configuration diaphragm or diaphragm-less Generator Current Control automatic or fixed (400 mA) Generator Type Detection automatic Titration Vessel operating volume between 100 – 200 mL Solvent Handling System sealed system with integrated diaphragm air pump and beaker adapter Sensor System Specifications Sensor Type HI76330 dual platinum pin polarization electrode Sensor Connection BNC Polarization Current 1, 2, 5, or 10 μA Voltage Range 2 mV to 1100 mV Voltage Resolution 0.1 mV Accuracy (@25ºC/77ºF) ±0.1% Additional Specifications Programmable Stirrer magnetic, optically regulated, digital stirrer; 200 to 2000 rpm; resolution 100 rpm Display 5.7” (320 x 240 pixel) backlit color LCD Methods up to 100 (standard and user) methods Logging Data up to 100 complete titration reports and drift rate reports can be stored Peripherals (Rear) connections for VGA display, PC-keyboard, parallel printer, USB device input, RS232 GLP Conformity Good Laboratory Practice and instrument data storage and printing Languages English, Portuguese. Spanish, and French Enclosure Material ABS plastic and steel Keypad polycarbonate Operating Environment 10 to 40°C (50 to 104°F), up to 95% RH Storage Environment -20 to 70°C (-4 to 158°F), up to 95% RH Dimensions 390 x 350 x 380 mm (15.3 x 13.8 x 14.9”) Weight approximately 10 kg (22 lbs.)