Hanna HI931 Automatic Potentiometric Titrator

Description

Precision Performance for Demanding Laboratory Titration Needs

The Hanna HI931 Automatic Potentiometric Titrator is engineered to address the most dedicated titration requirements across a range of chemical, analytical, and industrial applications. Equipped with an unmatched 40,000-step piston-driven dosing pump, it delivers extremely small, precise volumes of titrant or reagent, ensuring reproducible outcomes for even the most exacting analytical protocols. Laboratories handling acids, bases, redox reactions, precipitation titrations, complexometric determinations, non-aqueous samples, or ion-selective assays will find the HI931 ready to operate straight out of the box without the need for additional programming modules. Durable construction using Cycoloy® materials ensures that the instrument resists staining, heat, and environmental wear, while the high-contrast LCD with wide viewing angles keeps results visible from anywhere in the workspace. Compact in design, the HI931 occupies 50% less bench space than its predecessor, the HI901, enabling optimal workflow arrangements.

Versatile Functionality Across Potentiometric Measurement Modes

Functioning as a titrator, pH meter, mV/ORP meter, and ISE meter, the HI931 integrates multiple analytical tools into a single, bench-saving device. Its analysis type covers standard titrations including acid/base determinations in pH or mV mode, redox titrations based on oxidation-reduction potential, precipitation assays, argentometric chloride/silver ion determinations, and a range of ion-selective electrode analyses. Endpoint modes can be fixed pH, fixed mV, or equivalence point detection using first or second derivative methods for optimal sensitivity. Paired with precision electrodes, the instrument supports up to five-point calibrations with multiple standard or user-defined buffers and solutions to ensure flexibility across various analytical standards. A programmable overhead propeller stirrer, operating from 200 to 2500 rpm with 100 rpm resolution, maintains sample homogeneity for consistent titration performance.

Intelligent Design Enhancing the User Interaction Experience

The HI931 prioritizes ease of operation through a fully sealed interface where menu buttons are part of the display itself, making surfaces easy to clean and resistant to liquid ingress. Virtual keys simplify navigation between screens, while a dedicated help button provides instant guidance without halting operations. Real-time titration curves—whether mV versus titrant volume or pH versus titrant volume—are displayed during procedures for method refinement, with options to store and retrieve data for comparative analysis. Security is enhanced via PIN-code administration to restrict tampering by non-authorized personnel, ensuring all stored results maintain data integrity. Good Laboratory Practice (GLP) compliance is promoted by recording complete metadata for each sample, including operator name, company identification, date, time, electrode codes, and calibration data.

Exclusive Applications for Specialized Laboratory Requirements

Specialist users can deploy the HI931 in several niche yet critical sectors. In pharmaceutical laboratories, it delivers precise complexometric titrations for metal ion quantification in drug formulations. In food laboratories, it measures acidity and pH in beverages, dairy, and processed products with high accuracy. Environmental monitoring agencies use it for redox titrations in water treatment plants and argentometric titrations for chloride content assessment. Chemical manufacturing quality control teams benefit from its speed and reproducibility for verifying reagent concentrations, while academic research laboratories appreciate its adaptability for developing new analytical methods. The chemically resistant PTFE tubing with a light-blocking polyurethane sleeve preserves sensitive reagents from degradation during aspiration and dispensing. Adjustable electrode holders accommodate multiple sensors and stirrers simultaneously, enabling multi-parameter testing in confined workspace conditions without the need for constant reconfiguration.

Optimized Workflow with Exchangeable Burette System Features

An integral highlight of the HI931 is Hanna’s Clip-Lock™ exchangeable burette system. This user-focused design enables rapid swapping of burettes to change titrants or reagents without risk of cross-contamination, making the unit ideal for multi-method laboratories. Supplied as standard with a 25 mL burette, it can be outfitted with alternate capacities of 5 mL, 10 mL, or 50 mL to suit varying volume precision requirements. Automatic burette size detection simplifies setup, while flow rates are user-adjustable from as low as 0.1 mL/min to twice the burette volume per minute, enabling flexibility for reaction kinetics. The device’s dosing accuracy reaches ±0.1% of the full burette volume, and the resolution achieves an impressive 1/40,000, ensuring micro-volume titration endpoints are hit with perfect reproducibility and without overshooting the targeted measure.

Seamless Data Management and Laboratory Connectivity Options

Data handling with the HI931 is streamlined through its USB host port, allowing flash drive compatibility for transferring methods and reports easily between systems. Direct PC connection enables method export in LIMS-friendly formats for integration into laboratory information management systems. Up to 100 methods and 100 titration reports can be stored onboard for quick retrieval, benefiting repeated batch analyses and reducing administrative load. Rear panel connections accommodate external keyboards for direct method input, printers for instant report generation, analytical balances for automatic sample weight entries, and USB flash drives for rapid data sharing. The ability to print complete customizable analysis reports ensures every laboratory can tailor output documentation to exact regulatory or procedural needs.

Reliability, Durability and Long-Term Laboratory Investment

Built with both performance and durability in mind, the HI931 incorporates protective design elements to withstand typical laboratory mishaps. External gutter systems and internal trays safeguard sensitive electronics from accidental spills. The robust Cycoloy® casing resists heat distortion and surface damage while preserving its clean appearance over time. Designed to operate reliably across a broad environment range—from 10 to 40°C in operations and −20 to 70°C during storage—the titrator maintains precision regardless of climate-controlled or challenging field laboratory conditions. With a two-year manufacturer’s warranty, the instrument is a dependable investment for institutions focused on long-term analytical capacity. Supplied as a complete kit including electrodes, pump assembly, burettes, stirrer, temperature sensor, accessories, and software with installation tools, the HI931 ensures laboratories can begin operations instantly.

Authentic Purchase Assurance from Global Leader tpt24.com

When purchasing the Hanna HI931 Automatic Potentiometric Titrator, sourcing from tpt24.com guarantees the highest standards of authenticity, quality, and reliability. Recognized as the best online store worldwide for precision laboratory equipment, tpt24.com provides secure delivery to your location in any country, backed by a full guarantee of originality and manufacturing quality. Every HI931 ordered through tpt24.com comes with the manufacturer’s warranty intact, ensuring peace of mind and consistent performance for your laboratory operations. Whether you are ordering for a single instrument in a field lab or multiple units for large-scale laboratory networks, tpt24.com’s service ensures optimal procurement efficiency and trusted supply chain integrity.