Hanna Instruments HI934 Karl Fischer Coulometric Titrator Titrator Hanna Instruments

Hanna Instruments HI934 Karl Fischer Coulometric Titrator

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The HI934 Karl Fischer Coulometric Titrator delivers precise, low‑level moisture analysis from 1 ppm to 5%, combining advanced automation with a compact, chemical‑resistant design ideal for modern laboratory workflows. Engineered for accuracy, efficiency, and reduced operating costs, it provides fast, reliable water content determination at the push of a button—perfect for scientists and professionals who demand consistent, high‑quality results.

• Space‑saving, durable design built to withstand heat and harsh chemicals

• Sealed solvent system minimizes reagent exposure and prevents moisture intrusion

• High‑precision coulometric measurement for accurate low‑level moisture determination

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Fast Delivery

Most items ship same day

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Manufacturer Warranty

All products are covered by manufacturer warranty

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After-Sale Support

24/7 support

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HI934 Karl Fischer coulometric titrator front view

Dynamic Titrant Dosing

The instrument adapts dosing speed as the reaction progresses, linking iodine generation to the measured mV signal so endpoints are reached faster without sacrificing accuracy.

Drift Rate Compensation

Built-in drift correction accounts for trace moisture that can enter the cell from the surrounding environment, helping the reported water result represent your sample—not background humidity.

Titration Results Averaging

Run replicates under the same method and have the system calculate an average while tracking variability, giving you a clearer picture of repeatability across measurements.

Selectable Endpoint Criteria

Endpoint detection uses a dual platinum electrode, and you can choose how the run stops—such as by signal stability over time or by a defined drift threshold.

Multistage Cell Preparation

A conditioning step removes residual moisture from solvent and cell components to establish a stable starting baseline, then a standby routine helps keep the system dry between analyses.

Titration System

HI934 Karl Fischer titrator electrode holder raised view

Precision Iodine Generation

The dosing algorithm regulates electrolytic iodine production with fine current control, delivering only the amount required for the Karl Fischer reaction with high precision.

Chemically Resistant Titration Vessel and Tubing

Glass components and PTFE tubing are selected to tolerate aggressive solvents and reagents commonly used in Karl Fischer moisture determination.

Sealed Solvent System

Ground glass joints help isolate the titration cell from ambient humidity, while quick-fitting connections allow fast solvent replacement between analyses.

Molecular Sieve Desiccant

An integrated molecular sieve desiccant supports low and stable drift conditions by preventing moisture ingress into the sealed solvent system.

Digital Built-in Stirrer

A built-in magnetic stirrer automatically regulates mixing speed across a wide RPM range to maintain consistent sample agitation during analysis.

Interface & Display

Detailed Titration
Graphs

View the titration curve as it develops in real time to support method setup, verification, and faster troubleshooting.

Interactive Color
Display

A large color LCD presents the selected method and key run information, including results, units, drift rate, and mV readings.

Simple and Quick
Navigation

On-screen “virtual keys” keep common actions close at hand, making it easy to move between menus without getting buried in settings.

Titrator Data & Reporting

HI934 Karl Fischer titrator USB data transfer

Customizable Titration Reports

Reports can be configured to capture and store the fields that matter for your method, helping you keep records aligned with internal procedures and application requirements.

Flexible GLP Management

GLP-ready documentation supports consistent traceability by recording key details such as sample identification, operator and company information, date/time, electrode IDs, and calibration data.

Effortless Data Transfer

Export methods and reports to a USB flash drive or transfer to a connected computer; software updates can also be handled through the USB interface using compatible PC software.

Methods of Analysis

Customizable Methods

The HI934 can store up to 100 titration methods, allowing users to define or adapt procedures to suit specific applications and performance requirements.

Titration Method Support

Installation assistance, training, and method customization are available through application specialists, with continued support provided remotely as needed.

Adaptable Standard Methods

Standard methods aligned with organizations such as ISO, ASTM, AOAC, AOCS, and EPA can be configured to meet laboratory-specific workflows.

Connectivity & Functionality

Configurable Balance Interface

Sample mass can be captured directly from compatible analytical balances via serial communication, reducing manual entry and improving workflow consistency.

Multiple Peripherals

Peripheral support enables direct printing and optional external input/display accessories, helping labs tailor operation to their preferred reporting and control setup.

Specification	Detail
sku	HI934
Range	1 ppm to 5%
Resolution	0.1 ppm 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 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	dynamic
Result Statistics	mean, standard deviation
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
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	±0.1%
Programmable Stirrer	magnetic, optically regulated, digital stirrer 200 to 2000 rpm resolution 100 rpm
Display	5.7in. (320 x 240 pixel) 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)	PC Connection, USB Flash Drive, Analytical Balance, Printer, External PC Keyboard
GLP Conformity	Good Laboratory Practice and instrument data storage and printing
Languages	English, Portuguese, Spanish, and French
Enclosure Material	ABS, PC and Stainless Steel
Keypad	Polyester
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
Power Supply	100-240 VAC -01 models, US plug (type A) -02 models, European plug (type C)
Dimensions	315 x 205 x 375 mm (12.4 x 8.1 x 14.8")
Weight	approx. 4.3 kg (9.5 lbs.) with 1 pump, stirrer and sensors
Warranty	2 years

Shipping, Return, and Warranty Policy

At Blue Tiger Scientific, we are proud to distribute authentic Hanna Instruments products. The following policies apply to all purchases made through our store.

Shipping Policy

All orders are shipped via FedEx from Hanna Instruments' fulfillment center in Smithfield, Rhode Island.
FedEx Ground is the standard method; expedited options (2-Day, Overnight) are available for an additional cost.
Hanna Instruments only ships to residential or business addresses within the United States (no PO Boxes).
Orders placed after business hours, weekends, or holidays will ship the next business day, pending product and carrier availability.
Shipping timelines may vary depending on product availability, order size, and carrier logistics.
Blue Tiger Scientific and Hanna Instruments are not responsible for carrier delays, weather-related disruptions, or other unforeseen delivery issues once the order has shipped.

Return Policy

All return requests must be coordinated directly with Blue Tiger Scientific before a product is sent back.
Products must have a Return Merchandise Authorization (RMA) number issued by Blue Tiger Scientific before being returned.
Products must be returned in new or like-new condition, with the original packaging and proof of purchase (such as an invoice or packing slip).
Customers are responsible for return shipping costs unless otherwise stated.
Unauthorized returns (without an RMA) will be refused and returned at the customer's expense.
Returns are subject to inspection and approval. Products not in acceptable condition may be denied credit.
Some products, such as custom-built, special order, and hazardous materials, may not be eligible for return.

Warranty Policy

Hanna Instruments' products are covered by their Limited Warranty against defects in materials and workmanship under normal use.
All warranty claims and services are handled directly by Hanna Instruments.
Warranty periods vary by product. If unspecified, the standard warranty term is 18 months from the Hanna Instruments factory ship date.
If you experience an issue believed to be covered under warranty, please contact Hanna Instruments for guidance on how to submit your warranty request to Hanna Instruments.
Customers must follow Hanna Instruments' warranty submission process, including providing a claim number, product model and serial number, and a detailed description of the issue.
Hanna Instruments will determine whether products are repaired, replaced, or otherwise serviced under warranty.
Note: Warranty coverage does not apply to damage caused by misuse, accidents, unauthorized repairs, or improper storage and handling.

Important Notes

Some Hanna Instruments products are custom-made or built to order. Shipping will occur once the product is ready.
In the event of backorders, you may request partial shipments.
Delays beyond our control (e.g., material shortages, import delays, or carrier issues) may occasionally occur.

HI934 Karl Fischer Coulometric Titrator Instruction Manual

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