AUT-701 Automatic Titrators

Simultaneous Dual Titration capability. Fully Expandable for all types of Applications with network capability

2 Channel Simultaneous Titration Capability

The AUT-701 Titrator is a high performance microprocessor controlled titration system which will perform many types of titration routines. It has the ability to run two separate titrations concurrently while processing the data independently.


  • Single or dual channel simultaneous titration capability
  • Inflection point determination, set point, combination of both, Intersection, pH, Redox, pH stat, pKa, Amperometric, Conductometric, and Photometric Titrations can be performed.
  • Use up to (10) ABT-7 burets to Perform linked titrations and automated sequential titrations using different titration methods, preamplifiers, electrodes, burets and samples. Fully programmable for the most complex procedures.
  • New titration control for fast analysis time.
  • Complete validation for data tracking/GLP requirements. Includes an electrode calibration memory and confirmation and replacement routine for compliance and validation.
  • Results memory for 100 measured samples and total re-analysis function of previous data for 40 results.
  • True Multi-tasking operation. Modify and re-analyze data while titration is being performed.
  • True bi-directional RS-232 operation. USB and LAN Ethernet are standard with addressable configuration
  • Options include a multi-sampler for 12, 24, or 36 samples, Balance Interface, Computer interface, External printer and Multiple preamplifiers (For multi-electrode analysis)
  • Pre-defined(20 fixed) and User defined methods(40) are fully programmable and available for each channel. The system includes 20 Linked Modes, Buret Dispense modes, Calibration Mode and Potential measurement Mode(s) as Standard.
AUT-701 Automatic Titrators
2 Channel Simultaneous Titration Capability

Complete validation support for GLP GMP practice

The AUT-701 Titrator can track users with access permissions, and track electrode calibration, serial number, date, time, operator, etc. Our patented electrode memory sotres all the calibration data and serial number with the electrode. When a sensor is changed, the data is automatically downloaded to the instrument. Data can be tracked, stored and printed or sent to a host computer for logging.

Complete validation and automation is possible with the software package available with the AUT-701. Both an onboard printer and external printer is available. LAN/ethernet as well as USB ports built in.


Single, Multiple, and Dynamically linked Titration Methods and Routines:

There are many types of titration methods which can be performed. Methods include "Full Auto" for automatic end point detection and "End Level" for pre-set end-point level titrations. pH Stat titrations can be performed, and the system allows for complete control and automation of Conductivity ("V" and "L" type intersection) Methods. Special Algorythms for Petroleum Neutralization Titrations are also built-in. Also a few special routines are built in for Acidity, Salinity, Alkali, and Total Hardness.

The Control parameters are fully programmable and extremely flexible to accomodate the most demanding titration requirements. Full calculation control for up to 5 end points, linking of multiple titrations using multiple pre-amps is possible. Amperometric and colorimetric analysis is simple with the available sealed titration cell, photometric adapter and wide range on electrode systems.

Micro-titrations are now possible with the small volume titration adapter.

With the sampling device, you can completely automate your procedure from running the calibration standards, then standardizing the titrant, and then automatically running multiple samples without any operator intervention.

AUT-701 Titration Methods

The AUT-701 has the ability to perform many types of titration methods. This allows for unmatched flexibility to perform all type of titrations. A true recalculation mode allows for re-analysis of previous data after control parameters or calculation formulas have been modified.

Listed below are the methods available as standard equipment on the AUT-701. Also identified are a few important control parameters and explanation as to how they work.

Method Number Type of Method Description
1 (201) Neutralization Titration Automatic infelction detection Standard Mode for titration using automatic detection by 1st derivative. (Max potential change/volume increment). (up to 5 EP's w/calculations)
2 (202) Neutralization Titration by Set Point Standard Mode for Set point titration. (Volume at preset ph or mv level(s)), 2 set points
3 (203) Full volume Titration Auto EP detection after Max. Volume/potential reached. Used to titrate to a fixed volume or potential and then analyze data for end points based on programmable control parameters(ncluding Auto or set points). Extremely flexible and important when using the re-calculation mode. All data is resident.
4 (204) Blank Titration Mode Used to measure very small volumes in blank titration
5 (205) Non-Aqueous Titration Mode Used for Non-aqueous titrations. Uses very good potential stability parameters for equilibrium between additions.
6 (206) Potentiometric Titration small potential change at inflection Used primarily for precipitation, red-ox, or chelate titrations with ion electrode with a small potential change at the end point.
7 (207) Potentiometric Titration large potential change at inflection Used primarily for titrations with a large potential change at the end point. (strong acid / strong base titration)
8 (208) Conductivity Titration, Mode 1 Unique conductometric titration. EP is determined by "V" intersection. EP is judged as the point of intersection of two lines after titration.
9 (209) Conductivity Titration, Mode 2 Unique conductometric titration. EP is determined by "L" intersection. EP is judged as the point of intersection of two lines after titration.
10 (210) Petroleum Neutralization Titration, Mode 1 Total Base value of petroleum (TBN), Hydrochloric, non-aqueous titration. (ASTM 664)
11 (211) Petroleum Neutralization Titration, Mode 2 Total Acid value of petroleum (TAN), Perchloric, non-aqueous titration. (ASTM 2896)
12 (2123) Petroleum Neutralization Titration, Mode 3 Mode for measuring strong acid value + total acid value, strong base value + total base value
13 (213) pH Stat titration, pH adjustment, Mode 1 Standard mode for pH stat analysis for unknown buffering action in sample.
14 (214) pH Stat titration, pH adjustment, Mode 2 pH stat analysis for strong buffering action in sample.
15 (215) pH Stat titration, pH adjustment, Mode 3 pH stat analysis for weak buffering action in sample.
16 (216) Acidity Titration Mode Dedicated for measuring Acidity
17 (217) Salinity Titration Mode Dedicated for measuring Salinity
18 (218) Alkalinity Titration Mode Dedicated for measuring Alkalinity
19 (219) Total hardness Titration Mode Dedicated for measuring Total Hardness (Ca and Mg)
20 (220) Preliminary Test Titration Mode Used to help the operator determine the best titration parameters upon initial titration of a new sample. This mode uses the automatic EP detection algorythm. 21 to 60 User Methods Mode Used to custom tailor titration methods specific to the customers application. Freely programmable and can incorporate all of the parameters of the standard pre-defined methods. Ful calculation control is possible. Parameters also include titrating buret (1-10), electrode preamp and type, etc.
111 to 130 Link Mode Used to link other titration modes together to perform sequetial analysis of very complex titrations for one particular sample. Allows for multiple chemistries, dosing, and using all type of titration modes, reagents and electrode systems.
61 to 70 ABT Dispense Mode Used to control the ABT-7 buret for adding a fixed volume of reagent. fully programmable rate, buret, etc.
71 to 80 AST Unit control Modes Used for the AST measuring equipment
81 to 85 ABT Fixed Speed Injector Used to control the ABT-7 buret for fixed speed injection of reagent. (buret 1-10, volume and speed)
86 to 89 pH Calibration Mode Used with the TTT-510 Sampler to automatically perform a 3 point pH calibration. 90-93 Potential Measurement Mode Used to Measure potentials from attached preamps. Will be printed out. Select Electrode channel, preamp, wait time, etc.
94-100 Conc. Calculation Mode Used for calculating the concentration using measured values from any other mode.
101-110 Divergence Mode Used with the link mode, sets the destination to link based on the measured result
131-140 Reagent Checking Test the titrator system by using standard reagents for periodic maintenance

Titration results from the AUT-701 Titrator

To the left is a typical printout which can be obtained with the AUT-701 Titrator. Notice the analog (or s-shaped) curve as well as the first derivative at the end point.

Up to 6 different print formats are available:

Complete documentation is available via the onboard printer / plotter as well as external output to a LIMS system. There is also software available to output the data results to a PC for use with standard spreadsheet software for further data storage and recall or archiving purposes.

For more information, inquire about our AUT-LOG software control package.

For GLP/GMP Compliance, both real time and post titration or smoothed data can be obtained for record keeping. Notice the maximum first derivative value which corresponds to the end point of the titration. Also the electrode calibration date, time and information can be printed out.

Specifications: AUT-701 Main Unit

Measuring Range pH: pH0.00 - 14.00,
mV:0 to +/-1999.9mV,
Temp: 0 to 100.0 C.
Current/voltage: 0 - 2, 20, 200, 1000uA (by range Selection)/0.0-+/-2,000.0mv
Conductivity: 7 ranges, 0.0 - 200.0 S/m (by range selection)
% transmittence: 0.0 - 100.0%
Ambient temp.; 0.0-50.0C
Relative Humidity; 5-90%
pH Calibration Automatic 3 point calibration (pH 4.01, 6.86, 9.18), Manual with other standards
Titration Method/Measuring Method utomatic Inflection End point detection (Up to 5 points detectable)
Set Point Titration (Up to 5 points detectable)
Full Volume Titration (Inflection point plus set point) (Up to 5 points detectable)
Intersection of two lines detection titration (Up to 2 points detectable)
Stat Titration
Preliminary titration(Automatic parameter evaluation method)
pKa Measurement
pH (mV) Measurement
pH Adjustment
Electric Conductivity measurement
Display Color graphic LCD with Back light
Titration Curve, Titration Volume, pH(mV), Temperature simultaneously displayed.
Keyboard Operation Flat Keypad/ Dialogue operation system by function keys and numeric keypad.
Printer Provided (Internal) thermal Printer. External dot matrix Printer is optional
Output pH: +/-700mV (pH 0-14), mV: +/-1V, (0 to +/-1,999mV)
Number of electrode Input channels Maximum of three channels
2 Channels of pH/mV electrode inputs are installed as standard.
Third Channel can be installed as option:
FUT-7050 Potentiometric unit
FUT-7010 Photometric unit
FUT-7030 Polarization unit
FUT-7040 Conductivity unit
External Control I/O RS-232C x 5 Channel
1CH: Automatic Buret (ABT-7 Connectable up to 10 units)
2CH: Personal Computer
3CH: Turn Table (TTT-510)
4CH: 1 from Electric Balance Interface, AST-3210 sampler, or TTT-510
5CH: External Printer, EPS-R
LAN x 1
USB(Host) x 1
GLP applicable functions Electrode Calibration Resume function
Electrode replacement time notification
Power Requirements AC Line 50, 60Hz
Power Consumption 50VA When Connecting one ABT-7 automatic Buret)
Dimensions approx: 190(w)x192(h)x385(d)mm

Specifications: ABT-7 Automatic Buret

Indication LED syringe size indication
Syringe size setting Rotary switch
Syringe Fine polished hard glass, 20 ml std.
20 ml brown glass syringe (1ml, 5ml, 10ml, 50ml option)
Wetted parts material Hard glass, Teflon, Diflon
Tubing 2(ID) x 3(OD)mm Black Teflon Tube. (1(ID) x 3(OD) for 1ml syringe)
Absorption Speed Approx. 20 Seconds full stroke.,/font>
Dispensing Speed/
Minimum titration volume
50 ml syringe: 2 - 150 ml/min / 0.0025ml
20 ml syringe: 0.6 - 60 ml/min / 0.001ml
10 ml syringe: 0.3 - 30 ml/min / 0.0005ml
5 ml syringe: 0.2 - 15 ml/min / 0.00025ml
1 ml syringe: 0.03 - 3 ml/min / 0.00005ml
Buret Accuracy Whole capacity error allowance: +/- 0.1%, Reproducability: +/- 0.01ml(at 20 ml syringe)
Validation support Burette volume checking history: max 6
Outlet for peripherals one for burette, one for mag. stirrer
Ambient Temp and RH 5-35C, 85% or less
Power Requirements AC 100V-240V Line 50/60Hz
Power Consumption approx. 30VA
Dimensions approx: 110(w)x396(h)x346(d)mm

Standard Accessories: (AUT-701 Main)

1 GST-5741C Strong pH Electrode
1 143F192 pH 6.86 Standard Buffer Solution (500 mls)
1 143F191 pH 4.01 Standard Buffer Solution (500 mls)
1 RE-4-05 Saturated KCL solution, 50 ml
1 OIB00001 Electrode Holder
1 6948810K Electrode Stand with stop
1 ST-7 Magnetic Stirrer (110v or Specify Voltage)
1 OIB00004 Electrode attachment (G-type)
1 OIB00005 Electrode attachment (J-type)
1 PAP-HCSOIB00001 Thermal Printer Paper (Pack of 2 rolls)
1 Manual Operation Manual

Standard Accessories: (ABT-7 Burette)

1 7075610K Buret unit plate (for 1-20ml syringe)
1 AUT-045P 20 ml Brown glass syringe
1 AUT-066P Metal Plunger puller tool
1 P000070 Brown Glass degassing nozzle for 1-20 ml syringe
1 AUT-067P Nozzle cleaning wire
1 7075640K CO2 adsorbent Soda Lime tube
1 7075630K 1000ml reagent bottle, translucent/ brown
1 AUT-022P Teflon Tube, 2m
1 P000108 Tube for nozzle purge
1 118B641 Burette Connection cable, 0.9m
1 HEX-ACL3 Power Cord
1 Manual Operation Manual