Product Description

HI-901W Automatic Titration System for wine

The HI-901W Wine titrator is perfect for winemakers who need accurate results, ease-of-use, and the ability to expand the system as their analytical needs grow.

It comes preloaded with methods for wine analysis, and with Hanna, you get the support you need to run them perfectly in your lab.


The wine titrator complements our wide range of products dedicated to efficient and accurate laboratory analysis. The HI-901W potentiometric titrator can perform acid/base, redox (ORP), complexometric, precipitation, non-aqueous, argentometric, and ion selective titrations.

The powerful titrator dispenses the titrant, detects the endpoint, and performs all necessary calculations and graphs automatically. In addition to titration mode, the HI-901W also operates as a fully functional pH, mV/ORP, and ion selective electrode (ISE) meter.

The titrator is supplied with standard wine methods or you can create your own. Methods (standard or user) can be easily transferred between titrators via USB flash drive or PC application.

Titrator capabilities

Dynamic titrant dosing €“ Dynamic dosing allows for timely and accurate titration results by relating the titrant volume dosed to the mV response from the titration reaction. This provides for larger doses near the beginning of a titration and smaller, more precise doses near the titration endpoint.

Equivalence endpoint detection €“ Critical in applications where fixed endpoints are not specified in standard methods. This endpoint indicates where the mV response from the titration is greatest with respect to the volume of titrant dosed.

Multiple titration types €“ paired with the right electrode from our sensor line, our potentiometric titrator can perform acid/base, redox (ORP), complexometric, precipitation, non-aqueous, argentometric, and titrations with an ion selective electrode.

Signal stability timing €“ The signal stability feature monitors when the mV response of the titration reaction stabilises before providing the next titrant dose. This ensures reliable measurement values throughout the length of a titration.

Optimised for wine

Supplied with a full suite of standard wine methods, the Wine Titrator is optimised for winemakers. Packages are designed so that you€™ll have everything you need to produce quality wine. Our preloaded packages include the following methods:

  • Titratable Acidity €“ Acid/Base Titration (pH)
  • Free SO2 (Ripper) €“ Redox titration (ORP)
  • Total SO2 (Ripper) €“ Redox Titration (ORP)
  • Free SO2 (AO) €“ Acid/Base titration (pH)
  • Total SO2 (AO) €“ Acid/Base titration (pH)
  • Volatile Acid €“ Acid/Base titration (pH)
  • YAN (formal number) €“ Acid/Base titration (pH)
  • Reducing Sugar €“ Redox titration (ORP)

Data and storage

  • Customisable titration reports €“ each titration report is fully customisable so users can ensure they are storing and filing the appropriate data required for their application and procedures.
  • Effortless data transfer €“ Data can easily be transferred to a USB flash drive or PC with the Hanna HI-900PC application software.

Data and Storage

  • Customisable titration reports
  • Flexible GLP Management
  • Effortless Data Transfer

Connectivity and functionality

  • Multifunctional and four working modes €“ The HI-901W functions as a titrator, pH meter, mV/ORP meter, and ISE meter.
  • 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.

The electrode holder is easy to fit and gain added height for your requirements

Technical Data
Yeast available nitrogen (YAN) titration solution
HI-70456 Sodium hydroxide solution (0.1N), 1L
HI-70457 Sodium hydroxide solution (1N), 1L
Titratable acidity titration solution
HI-70456 Sodium hydroxide solution (0.1N,) 1L
Volatile acidity (VA) Acetic acid is commonly formed during yeast growth in the early stages of fermentation. The rate and amount of acetic acid formed is partially dependent on the pH, sugar levels, available nitrogen, and temperature of the system. Typical VA levels post-fermentation range from 0.2-0.4 g/L. Any level higher could indicate microbial involvement and potential spoilage. Solutions available:
HI-70456 Sodium hydroxide solution (0.1N), 1L
HI-70432 Hydrogen peroxide solution (3%), 25mL
Range -2.0 to 20.0; -2.00 to 20.00 ; -2.000 to 20.000
Resolution 0.1; 0.01; 0.001 pH
Accuracy (@25°C/77°F) ±0.001 mV
Calibration Up to five-point calibration, eight standard buffers and five custom buffers
Range mV -2000.0 to 2000.0
Resolution 0.1 mV
Accuracy (@25°C) ±0.1mV
mV Calibration Single Point Offset
Range 1€¢10-6 to 9.99€¢1010
Resolution 1, 0.1, 0.01
Accuracy ±0.5% monovalent; ±1% divalent
Calibration Up to five-point calibration, seven standard solutions and five user-defined standards
Range -20.0 to 120.0°C
Resolution 0.1°C/0.1°F/0.1K
Accuracy ±0.1°C; ±0.2°F/±0.1K (excluding probe error)
Analog Board(s) Each analog board provides: BNC (pH/mV/ISE) Input (1), reference input (1), Temperature input (1), Stirrer input (1)
Analog board capability 1
Dosing pump capabilities 2
Burette included 1 (25ml)
Burette Sizes 5, 10, 25 and 50 mL
Burette Resolution 1/40000
Display Resolution 0.001 mL
Dosing Accuracy ±0.1% of full burette volume
Display 5.7€ (320 x 240 pixel) backlit colour LCD
Languages English, Portuguese, Spanish
Methods load up to 100 methods (standard and user-defined)
Burette Auto-Detection burette size is automatically recognised when inserted into the pump unit
Programmable Stirrer overhead propeller type, 200-2500 RPM, resolution 100 rpm
Flow Rate user-selectable from 0.1 mL/min to 2 x burette volumes/min
Temperature Compensation manual or automatic (ATC)
End-point Determination equivalence point (1st or 2nd derivative) or fixed pH/mV value
Potentiometric Titrations acid-base, redox, precipitation, complexometric, non-aqueous, argentometric
Measurement Units user specified expression of concentration units to suit specific calculation requirements
Real Time & Stored Graphs mV-volume or pH-volume titration curve, 1st derivative curve or 2nd derivative curve, in pH-mode, mV-mode or ISE mode; pH/mV/concentration values versus time
Data Storage up to 100 titration and pH/mV/ISE reports
USB Host (Side) flash drive compatibility for transfers of methods and reports
Peripherals (Rear) connections for VGA display, PC-keyboard, parallel printer, USB device input, RS232
GLP Conformity instrumentation data storage and printing capabilities
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 €œ-02€ models: 230VAC
Dimensions 390 x 350 x 380 mm (15.3 x 13.8 x 14.9 in)
Weight approximately 9 kg (20 lbs.) with one pump, stirrer & sensors
HI-901W Titrator with one analogue board, overhead propeller stirrer with stand, 25ml glass burette, dosing pump drive, temperature sensor, USB cable, USB flash drive and PC software.
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