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Labindia Analytical Potentiometric Titrator Titra+ has Storage Facility for 50 methods.

Potentiometric Auto Titrator (Titra+)

Labindia Analytical Potentiometric Titrator Titra+ comes with quick interchangeable imported burette assemblies with intelligent recognition for its volume size.This potentiometric autotitrator is perfect for all types of industrial applications. The Titra+ has composite differential electrode amplifier unit for potentiometric and voltametric/Karl Fisher titration having connectivity to various electrodes.

Three standard modes of titration namely incremental, equilibrium and cut-off mode is provided to perform all types of titrations. There is a real time clock for time display and report printout with run time indication. With a balance interface to directly transfer the weight. 50 methods can be stored and report of method parameter can be printed in Titra+.

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Standard Features of Automatic Titrator
  • Advanced Micro controller based user-friendly, state-of-the-art product design with alphanumeric splash waterproof polyester soft keys for keyboard. User interactive software in dialogue mode for ease of operation with protection against invalid entries.
  • Vortex stirrer for vigorous and homogenous stirring with specially designed glass propeller for total chemical inertness.
  • Quick interchangeable imported burette assemblies with intelligent recognition for its volume size. Burette factor for dispensing corrections is available for true end point calculations.
  • Composite Differential Electrode Amplifier unit for Potentiometric and Voltametric / KF Titrations, having connectivity to various Electrodes. Temperature Sensor with 4-line measurement technique ensures correct temperature indication.
  • Three standardised modes of titration, namely incremental, equilibrium and cut-off by pH mode to perform almost all types of titration. By selecting titration method, instrument prints the type of appropriate electrode.
  • During titration, the measured variable i.e. electrode potential (mV) or the pH value is shown on the display together with dispensed volume and number of End Points (EP) detected.
  • User selectable End Point (EP) evaluation up to 9 EP during the run, and calculation by first, last, largest, all or selected EP with display of results and printout.
  • Alphanumeric entry of Sample Name, Titrant Name, Identification Number, Date with type of Electrode used for authentication. Daily Auto Incremented Run number and Factory entered CUSTOMER NAME and Instrument Sr. No. on report printouts make the system foolproof and GLP compliant.
  • Facility to use as a dispenser for fixed volume dosing or dilution allows to perform manual titration with user defined dose and mV indication.
  • Pre-dispense facility with selectable dose and time for quick titrant addition without disturbing the titration trend.
  • Automatic evaluation of molarity for standardisation of titrant, storage of 20 molarities and their retrieval for calculation.
  • Compliant to ASTM D664, D2896 & D4739 for TAN and TBN analysis for oil samples.
  • Titrant temperature factor for volume correction.
  • Result recalculation facility to obtain printout in different units such as molarity, factor, % assay (wt), % volume (ml), ppm, mg/l, mg/g, ml/g, g/l, meq/l, mol/kg, TAN & TBN for oil samples.
  • Reprocessing of threshold and recalculation of EP without performing the new run.
  • Statistic function with Run Selectivity for finding Mean, S.D., R.S.D., and C.V. of last 10 repeat run results could be viewed or printed.
  • User Programmed selectivity for report format, complying with GLP requirements:
  • a) Report giving parameter and result.
  • b) Data table giving mV, pH, mV, mV/ml, 2nd derivative and volume (µl).
  • c) Graphics report giving mV v/s µl titration curve.
  • d) Graphics report 1st derivative graph v/s µl titration curve. nd
  • e) Graphical report of 2 derivative curve.
  • f) Report of method parameters for 50 methods.
  • g) Condensed report of titration parameters and results.
  • h) Auto evaluation report for multi EP samples - EP1, EP2-EP1 etc. available.
  • The reports can be obtained even after resetting/power off/power fail conditions.
  • Real Time Clock (RTC) for time display and report printout with run time indication.
  • Balance interface to directly transfer the sample weight.
  • Two tier - a) Admin and b) User password protection for method editing.
  • TITRA can be converted to perform Karl Fischer titrations by simply changing burette assembly. All the specifications of LABINDIA Karl Fischer Titrator are applicable.
Typical Specification
Volume determination by equivalence point, end point or pH STAT

Microcontroller based (Advanced version of microprocessor).

mV range

± 3200 mV


±0.1mV (±0.0016 pH)

Amplifier input impedance

> 10"12 ohms

Burette Resolution

1/20000 for 1o ml volume

Burette Volume

5 ml, 1o ml & 25 ml available

Filling time



Alphanumeric splash waterproof polyester soft keys


40 x 2 line back lighted liquid crystal display (LCD)

Titration Head

(a) Manual stand with swivelling arm

Stirrer System

Microcontroller based variable speed, high torque vortex stirrer with digital indication. Magnetic Stirrer optional.


(1) Electrodes for Potentiometric titration - {pH, Ion, Redox, Argentometric).

a) Any combination electrode.

b) Differential Electrode System comprising sensing (Indicator) Electrode with BNC Connector and Reference Electrode with 4mm Banana Connector.

(2) Electrode for KFNoltametric titration with BNC/TNC Connectors.

(3) Temperature sensor (PRT/PT100)


3-point Calibration with user entered buffer values and standardisation with 7 pH buffer

End Point detection

a) Potentiometric, b) Voltametric, c) Thermometric and Photometric

Cut-off criteria

a) Volume b) End point c) mV/pH


1) Titrations –
a) Acid base,
b) Nonaqueous
c) Redox
d) Preciptiation
e) Complexometric
f) back titration
2) KF titration (Optional)


a) Molarity
b) % Assay (wt)
c) % volume (ml)
d) ppm
e) mg/I ijmg/g g) g/I h) meq/I I) moVkg
j) TAN and TBN for oil samples.

Method Storage

50 methods with parameters.

Titrant Molarity storage

20 Values


1) Method parameter.
2) Titration analysis report.
3) Titration analysis condensed report.
4) Titration data table. 5) Titration graphic report -
i) µIv/s mV
ii) µIv/s First derivative
iii)µIv/s Second derivative
iv) µIv/s Time
6) Auto evaluation report
7) Statistics report
8) End Point Titration report
9) Calibration report

Input/Output peripheral interface

a) Parallel Port :1No. for printer
b) Serial Port : 2 Nos. for Balance & PC


230 V AC ± 10%, 50 Hz.

Environmental Operating Conditions

a) Operation : Indoor
b) Temperature : Ambient to 45°C
c) Humidity: 5 to 90% non-condensing.

  • Data downloading facility to PC via 21CFR compliant EDC21 software. 
  • IQ, OQ, PQ, documents available.
The instrument provides following modes of Titrations
  • Incremental :
  • Incremental titration operates with user selectable fixed dose and fixed intervals till the end point is detected or volume limit is reached. 
  • Equilibrium :
  • This is universal and dynamic titration. In this titration the dose and time automatically get tuned to the titration trend with evaluation of end point. 
  • pH Cut-off/STAT :
  • a) In pH cut-off mode, the end point is determined in a pre-selected pH window.
  • b) In pH-STAT mode, the pH value is maintained until the pre-selected time inter val is fulfilled
The following Titrations are possible with TITRA
  •  Acid-base or aqueous titration                                        • Nonaqueous titration
  • Redox titration                                                                    • Argentometric or Precipitation titration
  • Complexometric titration or EDTA titration                    • Voltametric titration / KF Titration
  • Blank titration                                                                     • Back titration
  • Silver Assay Titrations (As per BIS 2113 : 2002)
  • Pharmaceuticals and Bio-Chemistry                                • Environmental and Water Pollution
  • Food and Beverages                                                           • Dyes and Chemicals 
  • Pesticides and Fertilizers                                                   • Petrochemicals, Plastics and Polymers
  • Metallurgy and Electroplating                                            •Jewellery Industry
Automatic Titrators