Cerko Lab System (CLS) instruments allow precision potentiometric, conductivity and amperometric titrations, kinetics, and temperature measurements.
CLS is dedicated for R&D, industry, quality control and/or environment control laboratories.
Depending on the version, the instrument consists of a precision microprocessor controlled microdosing unit with interchangeable syringes and pH meter, conductometer or amperometer. Dedicated analytical procedures can be built into the firmware.
Instrument can be controlled via host PC or directly from instrument keypad. CerkoLab software provides a common operational environment for all instruments within CLS line.
Each CLS device can operate in one of three modes. In remote mode the device is fully controlled, via RS232C or USB link, from a host PC. In local mode, the unit can operate without being connected to a PC and both titration and kinetics measurements are registered in microtitrator's internal memory. The registered data can be subsequently downloaded to a PC for further processing. In classic mode CLS instrument behaves like a portable meter.
The microtitrator electronics is equipped with a LCD display and 7 push buttons keypad. LCD shows both measured values and setup parameters. The keypad is used to control the instrument in local mode. In remote mode it provides auxiliary functions only.
Thanks to the three-way valve built into the dosing unit it is possible to maintain a continuous flow of titrant.
Measurement and measurement run:
A single measurement can be composed of a number of runs, all combined in one plot or data file.
One run can contain of up to 1000 readouts. The measured data can be saved to a file (using various formats e.g. Excel) or printed.
Syringe control:
- Filling up
- Emptying
- Washing up
- Addition of pre-programmed titrant volume
Syringe piston travel rate:
- Measurement speed
- Fill, empty and wash speeds
Types of measurements:
- Syringe calibration
- Electrode calibration
- Temperature sensor calibration
- Titration measurement # Kinetics measurement
- Dedicated procedures available, upon request, as separate modules or as independent analyser systems.
Presentation of measurement data:
- On screen x-y plot
- A4 publication ready x-y plot printout
- Thermal printer report
- File data formats: ASCII, Excel, HTML, and XML files
New applications of Cerko Lab System in Analytical Chemistry
- Titration in aqueous as well as in non aqueous solutions
- Determination of contents of various ions (e.g. Cl-, F-)
- Determination of acid value (food products, industrial oils, fuel)
- Measurement and/or on line pH regulation
- Automatic burette and syringe pump
- Determination of pKa in water and other solvents (also in mixture of solvents) for organic, bioorganic compounds and drugs
- Determination of CO32-/HCO3- concentration
- Determination of pKi for peptides and aminoacids
- Spectrometric titrations.
Cerko Lab System components:
- Dosing unit with three-way valve
- pH meter integrated with microtitrator
- Conductometer integrated with microtitrator
- Amperometer integrated with microtitrator
- pH/pC/mV multiplexer
- Syringe (5ml, 2ml or 0.5ml)
- Set of teflon tubing
- Measurement vessels (standard, thermostable, for non aqueous and Karl Fischer measurements)
- Measurement electrode with BNC connector (pH, conductivity, ionoselective, amperometric)
- PT1000 temperature sensor with cinch connector
- Thermal micro printer
- CDROM with CerkoLab software
- Connecting cables
- Power supply.
pH meter specifications:
|
| Number of input channels: | 1. |
| Voltage input range: | -1000..+1000mV +/-0.03mV. |
| pH measurement range: | 0..14 (electrode dependant). |
| Input impedance: | >1012Ω. |
| Default pH electrode: | calibration values: Eo=300mV, B=-59mV/pH. |
| Electrode calibration: | multipoint (min. 2 points). |
| pH multiplexer specifications: |
| Number of input channels: |
8. |
| Voltage input range: |
-1000..+1000mV +/-0.03mV. |
| pH measurement range: |
0..14 (electrode dependant). |
| Input impedance: |
>1012Ω. |
| Default pH electrode: |
calibration values: Eo=300mV, B=-59mV/pH. |
| Electrode calibration: |
multipoint (min. 2 points). |
| Types of measurements: |
calibration, kinetics. |
| Internal memory: |
512kB, 16*8 runs each of maximum of 1000 readouts. |
Conductometer specifications:
|
| Number of input channels: | 1. |
| Conductivity range: | 0.01μS..1S (min.) in 7 subranges. |
| Resistivity range: | 1Ω..10MΩ (min.) in 7 subranges. |
| Measurement range change: | automatic |
| Default conductivity electrode: | calibration value: 1cm-1. |
| Electrode calibration: | multipoint (min. 1 point). |
Common parameters:
|
| Temperature measurement range: | 0..100°C +/-0.097°C. |
| Measurement electrode: | electrode with BNC connector. |
| Temperature sensor: | PT1000 with cinch connector. |
| Syringe piston travel: | 70mm. |
| Number of measurement steps: | 1..1000. |
| Minimum titration step: | less than 0.001ml (using 5ml syringe). |
| Pause between measurements: | 1sec..4.5hour. |
| Default syringe: | Hamilton 5ml, calibration value 4.155. |
| Titrant flow: | continuous via three way valve. |
| Temperature sensor calibration: | multipoint (min. 2 points). |
| Syringe volume: | 5ml, (options: 0.5ml, 1ml, 2ml). |
| Number of syringes: | unlimited. |
| Number of electrodes: | unlimited. |
| Modes: | local, remote, manual, analyser. |
| Types of measurements: | calibration, titration, kinetics, specialised procedures. |
| Internal memory: | 512kB, 60 runs each of maximum of 1000 readouts. |
| Number of configuration profiles: | unlimited. |
| Default configuration profile: | CERKO.CFG. |
| File data formats: | POM, XLS, HTML, XML. |
| PC communication: | RS232C or USB. |
| Operating System: | Windows 95/98/Me/NT/2000/XP/Vista, Linux(with wine emulator). |
| Power supply: | +12VDC/1000mA via wall wart adapter. |
| Software options: |
Basic, Expert, Analyser, Upgrade, Spectro. |
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