756/831 Coulometer Water determination down to trace levels 02 The convincing solution for determining low water contents The 756 and 831 Coulometers continue Metrohm’s Other features estab lished line of Karl Fischer instruments for the deter- • Change of KF solution at the touch of a button: mination of low-level water contents. Traces right down If a 700 Dosino is connected to the Coulometer, to the lower micro range can be determined with guar-the spent solution can be replaced at the touch of anteed precision and accuracy. The dialogue languages a button. English, French, German, Spanish, Portuguese, Swedish • Flexible but easy to operate: The instruments and Italian are standard, as is the backlit screen with its have a standard and an expert mode. In the graphics capabilities. The screen not only provides a clear standard mode only those functions are accessible presentation of the parameters, but also shows graphi-that are needed in routine work. cally the course of the KF determination (live curve, μg • Cell with or without diaphragm: water versus time). Both Coulometers are available with two different types of generator cells. Despite their compact design the 756 and 831 Coulo - • Method memory: The integrated method memory meters leave no wishes unfulfilled. The printer is already has space for about 100 methods. built in (756 Coulometer), and the two RS-232 interfaces • Thermal sample preparation with KF oven: allow communication with a balance, external printer The instruments can be operated together with a and/or computer. KF oven. • Stand-alone or software-controlled: You decide whether the instrument is controlled via the incorporated keypad or by means of a computer and tiamo TM software. Water contents 10 μg ... 200 mg Sample types solid, liquid, gaseous Number of predefined methods 4 Number of methods that can be stored up to 100 Automation with 874 Oven Sample Processor Automatic conditioning yes Live curve yes Recalculation of results yes English, German, French, Spanish, Italian, Portuguese, Dialogue languages Swedish Thermal sample preparation − manual or automated Thermal sample preparation is suitable for samples that This sample preparation is easy and consists in weighing 03 cannot undergo direct Karl Fischer titration. the sample into a vial and then sealing the vial so it is air tight. The sample is then heated in the oven; the water in the sample is evaporated and transported by a stream of dry carrier gas into the titration cell. Using thermal sample preparation, there is no need for harmful solvents. Moreover, secondary reactions, matrix effects and contamination of the titration cell are com-pletely avoided. Finally, the Karl Fischer reagent needs to be replaced less frequently. Stand-alone or software-controlled You decide how your 756/831 Coulometer is controlled. If the instrument is operated as a stand-alone device, the incorporated keypad offers all the possibilities for controlling the 756/831 Coulometer. The LCD screen shows what is happening in the titration cell at all times. Alternatively, the 756/831 Coulometer can be controlled with tiamo TM software. The Coulometer is connected to a computer by way of one of the RS-232 interfaces. In this way you have all the features and advantages of tiamo TM available to you. Ordering information 2.756.0010 756 Coulometer with printer, generator electrode with diaphragm, 728 magnetic stirrer, and comprehensive accessories 2.756.0110 756 Coulometer with printer, generator electrode without diaphragm, and comprehensive accessories (without stirrer) 2.831.0010 831 Coulometer with generator electrode with diaphragm, 728 magnetic stirrer, and comprehensive accessories 2.831.0110 831 Coulometer with generator electrode without diaphragm, and comprehensive accessories (without stirrer) Options 2.728.0010 728 Magnetic Stirrer 2.700.0020 700 Dosino 6.5617.000 Equipment for automatic reagent exchange, including 50 mL Dosing Unit and bottle holder 2.703.0010 703 titration stand with built-in magnetic stirrer and pump for manual reagent exchange 2.860.0010 860 KF Thermoprep for manual thermal sample preparation 2.885.0010 885 Compact Oven Sample Changer for automated thermal sample preparation 2.874.0010 874 Oven Sample Processor for automated thermal sample preparation 6.6056.231 tiamo TM 2.3 light 6.6056.232 tiamo TM 2.3 full 6.6056.233 tiamo TM 2.3 multi www.metrohm.com G, CH-9100 Herisau ohm A witzerland by Metr , printed in S SW Subject to change Layout by Ecknauer+Schoch A 8.756.5000EN – 2012-05