TitraLab 840 Technical Specifications

Methods
• End point titration: 1 to 2 preset end points.
• Inflection point titration: Auto determination of 1 to 4 inflection points, programmable IP acceptation windows.
• IP detection using 1st & 2nd derivative curve.
• Titration stops at: pH, mV, ml, IP number.
• Titrant addition techniques: incremental dynamic, incremental monotonic and continuous dynamic.
• Titrant calibration.
• pH electrode calibration: up to 5 points using IUPAC standards or 4-7-10 Series buffers with error recognition.
• Direct pH/mV measurements: with recording on stable reading.
• Back titration with manual (TIM840) or automatic (TIM845) reagent addition.
• Sequencing of up to 3 consecutive methods within a sample changer series.
• Coupling of 2 methods in one beaker.

Measuring Range
• -9 to 23 pH
• ±2000 mV
• -10°C to +100°C

Resolution
• 0.001 pH
• 0.1mV
• 0.1°C

Printout
• Automatic. GLP compliant.
• Selectable: no, 80 columns.
• 3 levels of detail defined by method.
• Printed data can be sent as a single character string for LIMS connection.
 
Results
• In each method, calculation of up to 4 results and 1 user-defined equation.
• Statistical calculations.
• Optional result recalculation in case of sample quantity modification before archiving.

Units
• All standard units for samples/results.
• User-defined result units.
 
Storage capacity
• Global password protection for programming access.
• Non-volatile memory.
• User programmable: 10 methods.
• Libraries for 15 electrodes and 15 reagents: more than 30 electrodes and 20 titrants preidentified (ID and type) to help programming.
• Storage of last 60 results, last electrode and last reagent calibration for each library.
• Stored parameters characterised by own ID, location and calibration data.
• Embedded operating procedures for reagent exchange and burette operations.
 
Sample list
• Up to 20 data with alphanumeric ID.
 
Electrode Stand- Stirring
• Magnetic stirrer, 22 reproducible speeds (0 to 1100 rpm) in 50 rpm steps.
• Propeller connection.
• Beaker volume: 5 to 400 ml.
 
Burette
• 1 embedded burette stand.
• Burette volumes available: 1, 5, 10, 25, 50 ml.
• Delivered with 25 ml burette.
• Burette motor: 18000 steps.
• Complies with ISO 8655-3.
• UV-protected encapsulated glass syringe.
• Embedded operating procedures for burette exchange, air bubble removal (Flush).
• Fill, Empty functions.
 
Inputs/outputs
• 1 indicator and 1 reference electrode input.
• Selectable polarised input from -1 mA to 1 mA in 1 µA steps, DC or AC.
• Differential input for a third platinum electrode.
• Temperature input. 0-5 V TTL output.
• Serial connections: printer, balance, additional titrator, PC with TitraMaster 85 Data
• Collector software and SAC80 Sample Changer fitted with 10 to 20-position tray.
• PS/2 port: PC keyboard, barcode reader.
 
Languages
English, German, Danish, French, Italian, Spanish and Swedish.

Casing
• Fully splashproof chemical resistant lathene.
• Graphic 128x128 dot LCD protected from spillages with TPX cover.
• Rubber soft touch alphanumeric keypad.
 
Dimensions (H x W x D)
380 x 230 x 450 mm (excl. tubing).

Weight
5 kg (excluding reagent bottles).

Electromagnetic compatibility
Complies with EMC directive 89/336/EEC and LV directive 73/23/EEC.

Power requirements
47.5 – 63 Hz, 115/230 Vac +15 -18%.
 
Environmental conditions
5 to 40°C ambient temperature, 20 to 80% relative humidity.