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Autosampler for Automatic Potentiometric Titrator - HI921


Availability: In stock

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Free shipping on orders over $99 to the 48 contiguous United States. Standard UPS Ground shipping. *Exclusions include fertigation & titration (HI901C1-01, HI901W-01, HI902C, HI903-01, HI904-01, HI921) units. Large orders which require shipment on pallets will be assessed shipping charges.

The HI921 Autosampler is an automated titration sample handling system designed for use with the HI902C Automatic Titration System. This high quality system makes the titration of multiple samples quick and easy. The HI921 Autosampler interfaces directly with the HI902C to access titration methods, allowing up to 18 samples to be run consecutively.

The HI921 can utilize up to three peristaltic pumps for reagent addition, sample leveling, and waste aspiration. An included control panel allows for manual operation of the motors and pumps. The Autosampler also features a built-in magnetic stirrer or optional overhead stirrer, status indicator lights, USB interface with compatible barcode reader, and built-in RFID for each tray.


Intuitive Automation

HI921 Autosampler

Chemically Resistant Pumps

You can connect up to three peristaltic pumps on the HI921 Autosampler. These peristaltic pumps use high performance plastic, engineered to be chemically resistant with a long service life. Each pump has a flow rate greater than 200 mL/min and can be used for reagent addition, sample leveling, or waste removal.

HI921 Autosampler

Multipurpose Arm

The Autosampler’s durable electrode holder is able to accommodate three 12 mm electrodes, a temperature sensor, one aspiration tube, five multipurpose tubes, and an overhead stirring assembly, allowing for maximum versatility. The multipurpose spaces can be utilized for a variety of functions including reagent addition or burette dosing.

HI921 Autosampler Indicator light

Autosampler Status Indicator

Highly visible status lights are located on top of the Autosampler. These lights correspond to the status indication on the HI902C titrator display and can clearly be seen from a distance. These indicator lights double as a safety feature and serve to automatically stop the current titration sequence with a simple press.

Carousel Functionality

HI921 Carousel Functionality

Choice of Sample Trays

The HI921 is able to automate samples using a 16 or 18 sample tray. The 16 sample tray accommodates 150 mL beakers while the 18 sample tray holds 100 mL beakers. The trays are composed of chemically resistant material and are easily removable. Each tray is dishwasher safe, providing a quick and simple way for users to clean regularly.

Automatic Tray Recognition

The HI921 sample trays feature a built-in RFID reader that’s able to detect and communicate the size and serial number of any tray on the carousel. Users can set up multiple trays designated to differing sample sets without confusion. The RFID reader will ensure that the appropriate tray is used each time.

Optical IR Beaker Detection

An optical IR beam is able to detect the presence or absence of each beaker within the sample tray. A user can select which action the HI921 should take if a beaker is missing during a titration sequence. The Autosampler may be programmed to skip the missing beaker, pause, or stop the titration sequence.

Smart Positioning

The HI921 contains an absolute encoder that can track the tray position without needing to return “home” or calibrate. The encoder retains the position information when powered off and is readily available when powered back on.

Integrated Magnetic Stirrer

A magnetic stirrer comes built into each carousel assembly. Users simply have to add a small magnetic stir bar to each sample beaker to ensure samples are well-mixed during titrations. An optional overhead propeller stirrer may also be installed as an alternative. The HI921 allows you to easily adjust the stirring speed of both the built-in and overhead stirrers for optimal mixing.

Sample Handling & Recording

HI921 Autosampler Indicator light

Expedited Sample Entry

Sample names can be auto-incremented for speedy and convenient sample entry.

Configurable Balance Interface

Sample sizes may be automatically communicated from any laboratory analytical balance with a RS232 serial output, saving time and labor.

Flexible Sample Assignment

Up to 18 samples may be run consecutively with the options to accommodate up to 3 rinse beakers and 1 storage beaker.

Organized Sample Table

A USB-compatible barcode reader may be connected to the Autosampler, associating names with samples for improved recordkeeping.

Titration Data & Reporting

HI902C Angled

Customizable Autosampler Sequences

The HI902C can store up to 100 user-defined or standard titration methods that can be accessed by the Autosampler. Each method may be customized and optimized for sequence performance based on application and user requirements.

Detailed Sequence Reports

Autosampler sequence reports detail sample names, beaker positions, sample sizes, and results for the sample tray in addition to detailed titration reports for individual samples.

Customizable Titration Reports

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

Made in the USA Icon

Dedicated Support Team

Onsite installation and training 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.

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Titration Maintenance Agreement

Titration Maintenance Agreement

You’ve made a great choice when you go with Hanna for your titration needs. All it needs is a little TLC, and it will serve you well for years.

All titration equipment requires annual maintenance due to the wearable parts and the harsh chemicals, such as sodium hydroxide, required in many titrations. An annual checkup, calibration, and replacement of burette accessories result in a long instrument life, accurate and precise results, and safe operation.  

As always, Hanna delivers the quality and expertise you need at an affordable price. The Hanna Titration Maintenance Agreement keeps your instrument in optimal working order and ensures that you stay up-to-date on best testing practices. The agreement includes the following services and perks, which keeps your instrument performing at its best:

  1. One (1) onsite calibration, performed for you by certified personnel

  2. One (1) time replacement of wearable parts

  3. Backup of your titration methods

  4. Coverage by the Hanna Loaner Program. When you send your titrator in for service or repair, we will give you one of ours to borrow, with your methods loaded, so that you’ll never be without.

  5. One (1) refresher training by a Hanna expert

  6. 25% off all services, including your install

  7. 5% off all Hanna purchases

  8. Certificate provided to you upon completion

The Hanna titration line enjoys an incredibly low cost of ownership, and the Titration Maintenance Agreement is the cornerstone of that value.

Autosampler Specifications

Electrode Holder Slots 3 x 12-mm electrodes, 1 temperature sensor, 1 aspiration tube, 5 multipurpose slots (titrant/reagent tubes), 1 overhead stirrer
Temperature Sensor HI7662-A (included)
Stirrers built-in magnetic stirrer, overhead propeller stirrer (optional)
Peristaltic Pumps up to 3 can be installed, installs in slots #1, #2, and #3
Trays 16 beakers x 150 mL (HI920-11660), 18 beakers x 100 mL (HI920-11853), built-in RFID, transmits the tray type and serial number
Beakers ASTM short-form glass beakers, 16 plastic beakers, 150 mL (HI920-060), 18 plastic beakers, 100 mL (HI920-053)
Control Panel buttons for manual operation of tray and titration head, manual operation of peristaltic pumps, two-line backlit display with status information
Barcode Reader compatible with USB barcode readers, used to add sample names
Report Storage up to 40 trays of samples (e.g. 720 reports for 18 beaker tray)