Coulometric Karl Fischer Automatic Titrator

Coulometric Karl Fischer Titrator – HI934

For scientists and professionals who need exact water content determination from 1 ppm to 5%, our new generation of the Coulometric Karl Fischer Titrator is engineered to meet or exceed your technical requirements while delivering a lower cost of ownership. With cutting-edge features packed into a compact design, this titrator delivers accurate results and requires less space in the lab. Get accurate water content determination at the push of a button. Designed for the modern lab, this karl fischer titrator is the perfect fit for your testing environment.

Compact design will save space in the lab without compromising your results.
Durable heat and chemical resistant body.
Sealed solvent system helps to keep water out of the system, while giving you minimal exposure to the reagents.

Dynamic Titrant Dosing

The dynamic titration speed allows for timely and accurate titration results by relating the amount of iodine generated to the mV response from the Karl Fischer reaction. This provides for a larger generation of iodine near the beginning of a titration and more precise pulses near the titration endpoint.

Drift Rate Compensation

The HI934 automatically adjusts the titration calculation to account for the effects of any ambient humidity entering the titration cell. This provides a more accurate result by correcting for water not present in the actual sample.

Selectable Endpoint Criteria

The HI934 employs a dual platinum pin electrode for bivoltammetric endpoint determination. Users may choose termination criteria based on mV stability times or drift rates.

Multistage Cell Preparation

A pre-titration stage eliminates residual water present in the solvent and the cell, providing a reliable baseline start to analysis. Standby mode then keeps the solvent dry between titrations and when the titrator is not in use.

Coulometric Titration System

Purposeful Generator Design

Two styles of generators are available for the HI934; a fritted design ideal for samples with low water content and high accuracy demand; and a fritless generator allowing for easier cleaning and maintenance.

Precision Iodine Generation

Our dosing algorithm allows for an extremely small amount of iodine necessary for the Karl Fischer reaction to be generated electrolytically using a pulsed current up to 400 mA, delivering iodine accurately and precisely.

Titration & Solvent System

Chemically Resistant Vessel & Tubing

The glass titration cell and PTFE tubing is designed to withstand the harsh solvents and reagents involved in Karl Fischer reactions.

Sealed Solvent System

Ground glass joints completely seal the glass titration cell, minimizing exposure to ambient humidity, keeping the system dry, and reducing reagent consumption while saving time between titrations. Solvent may be exchanged in a matter of seconds with a quick fitting adjustment.

High Efficiency Desiccant

High efficiency molecular sieve desiccant helps maintain low and stable drift rates within the titration cell while preventing the ingress of ambient humidity into the sealed solvent system.

Interface & Display

Interactive Color Display

A large, color LCD screen clearly shows the chosen titration method along with results, units, total water, drift rate, and mV value.

Detailed Titration Graphs

A real-time titration curve can be displayed during each titration; this feature is useful when new methods are tested or when a procedure requires optimization.

Simple & Quick Navigation

Virtual key selections present on the display allow for simple and quick navigation between screens and menus without getting lost in a nest of information.

Data & Storage

Customizable Titration Reports

Each titration report is fully customizable so users can ensure they are storing and filing the appropriate data required for their application and procedures.

Flexible GLP Management

All necessary GLP (Good Laboratory Practice) information can be recorded with each sample including: sample identification, company and operator name, date, time, and electrode ID codes.

Effortless Data Transfer

Data can easily be transferred to a USB flash drive or PC with the Hanna HI900PC application software. The USB port allows for the transfer of titration methods, titration reports, and software upgrades via USB flash drive.

Connectivity & Functionality

Configurable Balance Interface

Sample size may be automatically entered from any laboratory analytical balance with a RS232 serial output saving time and labor.

Multiple Peripherals

Users can print reports directly from the titrator using a standard parallel printer. An external monitor and keyboard may be attached for added versatility, as well as an analytical balance for automatic sample mass entry for titrations.

Connectivity & Functionality

Methods of Analysis

Customizable Methods

The HI934 can store up to 100 user-defined or standard titration methods. Each method may be customized and optimized for performance based on application and user requirements.

Titration Method Support

Onsite installation, training, and customization is available from one of our Applications or Service experts. Hanna offers continued support via phone or webinar for any questions you might have along the way.

Adaptable Standard Methods

Our technical experts can program and customize standard methods developed by such affiliations as ISO, ASTM, AOAC, AOCS, EPA, and more directly onto your titrator. Ask our Sales Consultants which standard methods are possible with our HI934 Karl Fischer system.

Specification

Product Name	Coulometric Karl Fischer Titrator – HI934
Titration Principle	coulometric Karl Fischer
Titration Range	1 ppm to 5%
Titration Resolution	0.1ppm to 0.0001%
Measurement Units	%, ppm, ppt, mg/g, μg/g, mg, μg, mg/mL, μg/mL, mg Br/100g, g Br/100g, mg Br, g Br
Sample Type	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 Type	dynamic with optional pre-dispensing rate
Result Statistics	mean, standard deviation
Titration Vessel	operating volume between 100 – 200 mL
Solvent Handling System	sealed system, integrated diaphragm air pump
Connection Type	BNC
Polarization Current	1, 2, 5, or 10 μA
mV Range	2 mV to 1100 mV
mV Resolution	0.1 mV
mV Accuracy	±0.1%
Stirrer Type	magnetic, optically regulated, digital stirrer
Stirrer Speed	200 to 2000 rpm
Stirrer Resolution	100 rpm
Titrator Methods	up to 100 methods (standard and user-defined)
Reports	up to 100 complete titration reports and drift rate reports can be stored
GLP Conformity	Good Laboratory Practice and instrument data storage and printing
Peripheral Devices	connections for VGA display, PC-keyboard, parallel printer, USB device input, RS232
Display	5.7” (320 x 240 pixel) color LCD
Keypad	polycarbonate
Languages	English, Portuguese. Spanish, and French
Power Supply	100-240 VAC; “-01” models, US plug (type A); “-02” models, European plug (type C)
Environment	operating
Dimensions	315 x 205 x 375 mm (12.4 x 8.1 x 14.8 “)
Weight	approximate 4.3 kg (9.5 lbs.)

Weight	5 kg
Dimensions	31.5 × 20.5 × 37.5 cm