Metrohm 917 Coulometric Karl Fischer Titrator

Product Introduction

The 917 Coulometer (Generation One) is an all-in-one Karl Fischer coulometric water content analyzer launched by Metrohm (Switzerland). The control panel, magnetic stirrer, titration cell and reagent addition/drainage pumps are all integrated into a single unit, offering a compact structure and a small footprint. The instrument provides two modes: Karl Fischer coulometric water determination (KFC) and coulometric bromine value/bromine index determination (BRC). The coulometric method is an absolute method requiring no titration factor standardization, making it particularly suitable for the determination of trace water content in liquids, solids and gases.

Main Technical Parameters

• Model/Order Number: 917 Coulometer (1.917.0010; complete configurations such as 2.917.0010, 2.917.1010, etc.)
• Determination Method: KFC Karl Fischer coulometric method; BRC coulometric bromine value/bromine index determination
• Water Content Measurement Range: Recommended 10 µg to 200 mg absolute water content; maximum measurement limit 1000 mg
• Measurement Accuracy: ±0.3% (at H2O content ≥1000 µg)
• Maximum Electrolysis Rate of Generator Electrode: 2241 µg H2O/min
• Generator Electrode Current: 100, 200, 400 mA and auto, adjustable
• Indicator Electrode Polarization Current: AC 5, 10, 20, 30 µA; DC –125…+125 µA
• Potential Measurement Resolution: 0.1 mV
• Built-in Diaphragm Pump: Yes; enables automatic reagent addition and draining of waste from the titration cell
• Interfaces: 2 MSB interfaces (for connecting Dosino/Dosimat dosing drives and stirrers); 2 USB interfaces and a network interface
• Touchscreen: 90 mm × 120 mm high-resolution color screen with real-time curve display; supports creation of 14 shortcut method icons
• Dialog Languages: English, French, German, Spanish, Chinese, etc.
• Automation: Can be connected to the 860 single-position KF heating oven or the 885 KF sample heating processor (18 positions)
• Data and Compliance: Generates tamper-proof PDF reports without a computer; can be stored on a USB flash drive or transmitted via network/LIMS; complies with FDA 21 CFR Part 11

Product Features

• Integrated design combining the control panel, stirrer, titration cell and reagent addition/drainage pumps in one unit, saving laboratory space
• Continuous reagent monitoring with automatic replacement prompts upon reaching user-defined limits, ensuring safer operation
• Automatically senses sample addition and starts titration automatically
• When used with a KF heating oven, suitable for samples that are difficult to dissolve or release water slowly
• Tamper-proof PDF reports with USB flash drive/network storage enable paperless operation and data traceability

Technical Specifications

Specifications compiled from the manufacturer's official documentation; the delivered configuration and its datasheet prevail.