Titration Systems

MODEL 901

  • Measures pH, titratable acidity, and salt
  • Highly precise professional unit that's easy to use
  • Compact size maximizes bench space

The 900 Series titration systems offer advanced solutions for routine sample analysis. The innovative 900 Series features 10 pre-programmed methods and can support up to 12 user-definable methods. During the titration, temperature and measurement units are displayed or the user can choose to activate real time graphing that shows the exact curve profile of the titration on screen. Other powerful features include Clip-Lock exchangeable burette system, automatic burette volume recognition, and a programmable propeller stirrer with integral feedback control.

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A. Aspiration Tube (Titrant Inlet)
B. Dispensing Tube (Titrant Outlet)
C. Burette Assembly
D. Light Shield (in closed state)
E. Burette Support
F. Support Bar
G. Sliding Positioning Collar
H. Dispensing Tip
I. Temperature Sensor
J. pH Electrode
K. Stirrer Propeller
L. Stirrer Stand
M. Numeric Keys
N. Function Keys
O. Help Keys
P. Arrow Keys
Q. Option Keys

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Specifications mV pH Temperature
Range -2000.0 to 2000.0 mV - 2.000 to 20.000 pH -5.0 to 105.0XC/23 to 221XF
Accuracy 0.1 mV (@25XC/77XF) 0.001 pH (@25XC/77XF) 0.1XC/0.2XF (excluding probe error)
Resolution 0.1 mV 0.1/0.01/0.001 pH 0.1XC/0.1XF
Dosing Accuracy 0.1% of full burette volume
Display Resolution 0.001 mL
Burette Resolution 1/40000
Burette Sizes 5, 10, 25, and 50 mL
Burette Volume Accuracy Display resolution
5 mL 5 µl 0.001 mL
10 mL 10 µl 0.001 mL
25 mL 25 µl 0.001 mL
50 mL 50 µl 0.001 mL
Display: Graphic LCD 120 x 90 mm (4.7 x 3.5 in)
Languages: English, French, German, Italian, Spanish and Romanian
Methods: 10 standard and 2 troubleshooting methods (preprogrammed) and 12 user-defined methods
Burette Auto-Detection: Burette size is automatically recognized when inserted into the unit
Programmable Stirrer: Propeller type, 100-2500 RPM, automatically held within 10% of the set value, resolution 100 rpm
Flow Rate: User-selectable from 0.1 mL/min to 2 burette-volumes/min
pH/mV Measurement: Titrators will also perform simple pH and mV measurements
Temp. Compensation: pH measurements are automatically temperature compensated
pH Calibration: Manual or automatic at 1-5 points with 4 buffer sets for custom buffers
Potentiometric Titrations: Acid-Base (pH or mV-Mode), Redox, Precipitation, Complexometric, Non-Aqueous, Ion-Selective, Argentometric (in mV-mode only)
Titer Determination: Preprogrammed methods
Titration Methods: Fixed mV or pH end-point detection & first equivalency point detection (with the 1st or 2nd derivatives of the titration curve)
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, versus time-datalogging results
Data Storage: mV-Volume or pH-Volume titration curve, 1st derivative curve or 2nd derivative curve, versus time-datalogging results
Disk Drive: Built-in 3.5" floppy disk drive allows storage and transfer of configurations, preprogrammed methods, custom methods, titration reports and bitmap graph files
Peripherals: Connections for VGA display, PC-keyboard, parallel printer, RS 232 interface, RS 485 interface (for future expansion)
GLP Conformity: Instrumentation data storage and printing capabilities
Mains: 100 VAC, 50-60 Hz (HI 901-03 and HI 902-03); 115 VAC, 50-60 Hz (HI 901-01 and HI 902-01); 230 VAC, 50-60 Hz (HI 901-02 and HI 902-02)
Power Draw: Max 40 VA, 2 exchangeable fuses
Enclosure Material: ABS plastic and coated steel
Keypad: Polycarbonate
Dimensions: Width x Depth x Height = 390 x 350 x 380 mm (15.3 x 13.8 x 14.9 in)
Weight: approx. 10 Kg (22 lb) with one pump and stirrer assembly
Operating Environment: 10 to 40XC (50 to 104XF), up to 95% R.H.
Storage Environment: 20 to 70XC (-4 to 158XF), up to 95% R.H.

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Preprogrammed Methods
Name Dosing Type Endpoint mode Calculation
NaOH Titrant conc. Dynamic Fixed 8.600 pH Titrant conc. by weight
HCl Titrant conc. Dynamic Fixed 8.600 pH Titrant conc. by volume
Na2S2O3 (Thio) Titrant conc Dynamic mV equivalency, 1st derivative Titrant conc. by weight
Alkalinity of Water Dynamic Fixed 4.500 pH Sample conc. by volume
Acidity of Water Dynamic Fixed 8.300 pH Sample conc. by volume
Water Hardness Dynamic mV equivalency, 1st derivative Generic Formula
Chloride conc. Dynamic mV equivalency, 1st derivative Sample conc. by volume
Neutralization w/ H2SO4 Dynamic mV equivalency, 1st derivative Sample calc. by volume
Neutralization w/ NaOH Dynamic pH Equivalency, 1st derivative Sample calc. by volume
FeII(NH4)2(SO4)2 (FAS) Titrant conc. Dynamic mV equivalency, 1st derivative Titrant calc. by volume

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Excellent Technology Co.
Hong Kong: Tel. (852) 2691 3821    Fax. (852) 2900 2980
Email: LabSupplyhk@Gmail.com

China: Tel. (86) 150 1799 2655   Fax. (86) 755 3360 9662
Email: etchk.China@Gmail.com