Potentiometric methods
- pH electrode calibration: up to 5 points using IUPAC standards or 4-7-10
Series buffers with error recognition on buffer used.
- Possibility to work with user-defined buffer values using the Free buffer
mode.
- pH with temperature-compensated reading: probe, entered or fixed at
25°C.
- Direct pH/mV measurements with recording on stable reading.
- Sequencing of up to 10 methods, including electrode calibrations.
- Coupling of 2 to 6 methods in one beaker, including direct ISE and EC
measurements.
Conductivity method (EC)
- Direct conductivity measurements with recording on stable reading.
- Conductivity with temperature-corrected display: none, natural water
(ISO 7888), linear.
- Conductivity cell cable resistance compensation.
- Conductivity cell calibration: manual or automatic cell constant determination
using free standards or 1, 0.1, 0.01 Demal KCl standards, NaCl 0.05% and
26.6 µS/cm @ 20°C low conductivity standard, 0.1, 0.01 and 0.001
M KCl standards.
Ion-Selective Method (ISE)
- Direct measurements with recording on stable
reading.
- Electrode calibration with up to 9 standard solutions.
- Electrode calibration curves fitted using non-linear regression with
CÆ detection limit determination according to IUPAC.
- mV = f(pC) for ISE calibration curve plotting.
Measuring
Range
-9 to 23 pH
±2000 mV
4 µS to 400 mS
-10°C to +100°C
Resolution
0.001 pH
0.1 mV
Conductivity: 1/4000 of the scale
0.1°C
Printout
- Automatic. GLP compliant.
- Selectable: no, 80 columns, continuous, page to page. 3 levels of detail.
- Laser or dot matrix printer.
Results
- QC check on results with visual warning.
- Statistical calculations.
Units
- All standard units for samples/results.
- Conductivity: µS/cm or mS/cm.
Storage capacity
- Global password protection for programming access.
- Non-volatile memory.
- User programmable: 50 methods.
- More than 30 electrodes pre-identified to help programming.
- Storage of 200 results. Results storage can be disabled.
- Stored parameters characterised by own ID, location and calibration
data.
- Embedded operating procedures for electrode exchange.
- Automatic electrode and QC prompt.
Sample list
- Up to 126 data with alphanumeric ID.
- QC sample definition.
Electrode stand - stirring
Magnetic stirrer, 22 reproducible speeds (0 to 1100 rpm) in 50 rpm steps.
Propeller connection.
Beaker volume: 5 to 400 ml.
Inputs/outputs
2 indicator electrode inputs.
1 reference electrode input.
1 ground input for differential measurement.
1 imposed current input, ±1 mA ±1 µA.
1 temperature input.
2/4 pole conductivity cell input.
0-5 V and 0-12 V TTL output.
0-5 V TTL input.
Serial connections for printer/PC.
Serial connection for sample changer fitted with 10 to 126-position tray.
PS/2 port for PC keyboard and/or barcode reader.
Languages
English, German, Danish, French, Italian, Spanish, Swedish.
Casing
Fully splashproof KYDEX® T (PVC/acrylic).
Graphic 128x128 dot LCD and alpha-numeric keypad.
Dimensions (H x W x D)
260 x 200 x 400 mm.
Weight
2.5 kg.
Power requirements
47.5 - 63 Hz 115/230 Vac +15 -18%.
Environmental conditions
5 to 40°C temperature.
20 to 80% relative humidity.
International standards
CE marking: complies with EMC directive 89/336/EEC, LV directive 73/23/EEC.
Ordering information
ION450 systems
The ION450 Ion Analyser, Complete is delivered ready
for use including a combined pH electrode (Red Rod technology), a
4-pole conductivity cell and a full set of connecting cables, sample stand
accessories, 4.005-7.000-10.012 IUPAC buffers, 0.1 and 0.01 Demal KCl
conductivity standards and a GK ANNEX Electrode Maintenance Kit.
The ION450 Ion Analyser, Basic includes a full set of
connecting cables and sample stand accessories. Electrodes and standards
need to be purchased separately.
Metrology
To comply with ISO 9001 and ISO 17025 requirements, our metrology department
can supply calibration and verification certificates.
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ION450 
