Coulometer Expert-006 (universal, determination of acids)
Coulometer Expert-006 (universal, determination of acids). The analyzer is designed for quantitative determination of the mass of a substance contained in a solution in the form of ions, complex compounds, neutral molecules and other electroactive compounds, by coulometric titration in galvanostatic mode. Scope of application: coulometric titration using the neutralization method (acid-base titration), titration with electrogenerated oxidizing agents and reducing agents, titration methods based on precipitation and complexation reactions. The analyzer can be used in chemical-technological, agrochemical, environmental and analytical laboratories of industrial enterprises, research institutions, control, inspection and supervision bodies. It is used in industrial, laboratory and field conditions. The analyzer has a standard RS 232 communication interface and can work in conjunction with IBM PC computers. It is possible to record the results of measuring the amount of a substance into the memory, indicating the time of measurement. The analyzer consists of a measuring transducer, including a galvanostat and a coulomer, an electrochemical cell consisting of anode and cathode chambers separated by a porous glass filter, and a magnetic stirrer. Titration of the analyte is carried out in an electrochemical cell that contains a pair of generator electrodes and an indicator electrode used for potentiometric, bipotentiometric, conductometric or photometric determination of the end point of the titration, an electrolyte for generating the titrating reagent, and a sample of the analyte. The analyzer's controls and digital display are located on the front panel of the analyzer. Controls and connectors for external electrical connections are labeled accordingly. The converter is designed as an electronic microprocessor unit powered from an alternating current network through an external power supply. The measurement results are presented on the liquid crystal display in alphanumeric display or in graphic form. Features: modern element base; powerful microprocessor; ability to work with replaceable cells; easy and convenient connection to a PC via RS 232 interface; displaying measurement results on the device display or PC; saving results to a log file on a PC; the ability to program the analyzer for each type of titration (up to 5 programs); presentation of results on the display in mg/mcg, in mass. %, output of the titration time reduced to the maximum current of the range (5 or 50 mA); the ability to work and create charts without a computer; titration to a given point or analysis of the entire titration curve; Possibility of different indication of the titration end point. Manba: https://www.nv-lab.ru/catalog_info.php?ID=6453
- Feature: Parameter
- Overall dimensions of the measuring transducer, mm: 150×250×100
- Weight of the measuring transducer, kg: 1.5
- Magnetic stirrer connection: no
- Connection to PC COM port: yes
- Connection to PC USB port: yes, requires COM-USB adapter
- Power, VA: 6
- Time to establish the operating mode (pre-heating), min: 20
- Duration of continuous operation, hour: 20
- Power: mains
- Housing version: laboratory
- Range of measurements of the mass of the analyzed substance, g: from 10⁻⁶ to 10.00
- Limits of the permissible basic relative error in measuring the mass of the analyte by an analyzer complete with an electrochemical cell for acid-base titration,%: ±2.0
- Limits of the permissible basic relative error of measuring the mass of the analyzed substance with a measuring transducer,%: ± 0.2
- The volume of the cathode compartment of the electrochemical cell for acid-base titration must be at least 150 cm³, the electrical resistance of the cell filled with the background electrolyte is no more, Ohm: 400
- Input electrical resistance IP, Ohm: 1×10¹¹
- Time to establish the IP readings when measuring the EMF of the indicator system, s: 10