China Education Equipment Purchasing Network News: The automatic potentiometric titrator adopts the plunger titration method, and the single-chip microcomputer controls the plunger titration process to collect the dynamic signal of the electrode. During the titration process, the solution in the titration cell produces different potential changes. When the potential change of â–³ E / â–³ V is greater than the threshold value, it is the equivalent point value. When the set conditions are met, the instrument goes to the stop procedure and stops the titration The measurement results.
working principle
The working principle of the automatic potentiometric titrator (hereinafter referred to as titrator) is to measure the ion concentration by measuring the change in electrode potential. First select the appropriate indicator electrode and reference electrode to form a working battery with the measured solution, then add the titrant. During the titration process, due to the chemical reaction, the concentration of the measured ions changes continuously, so the potential of the indicator electrode changes accordingly. Near the end of the titration, the concentration of the measured ions changes abruptly, causing a sudden jump in the electrode potential. Therefore, the end point of the titration can be determined according to the sudden jump in the electrode potential, and the measurement result is given.
Instrument characteristics
â‘´The titration result is more accurate
The signal collected during the titration is 0.1mV, and the minimum titration feed can reach 0.0025ml, which is about 10 times higher than the feed of other ordinary titrators.
⑵Full Chinese display, easy operation and higher degree of automation
The instrument is displayed in Chinese, the parameter setting is convenient and clear, the instrument automatically titrates, automatically alarms at the end point, and can print out the test report results.
⑶With dynamic feed and quantitative feed
The dynamic feed titration method automatically adjusts the feed amount as the potential changes. This method is more effective for the titration of penicillin degradation products.
â‘· Can judge multiple equivalence points
The instrument has the same precise function as the similar foreign potential titration instruments. It can be set to 1 to 9 equivalent points, with two stop modes: equivalent point stop and volume stop.
The main function
According to the type of titration chemical reaction: acid-base titration, redox titration, complex titration and precipitation titration.
According to different points of titration solvent: aqueous solution titration and non-aqueous titration.
According to different points of titration method: chemical titration, penicillin content determination, penicillin calibration and penicillin degradation product measurement.
Related product introduction:
848 Titrino plus automatic potentiometric titrator
Main functions and features
The Titrino plus series is Metrohm's new generation of automatic potentiometric titrator, with a very high cost performance. Its configuration and performance far exceed people's expectations of the same price titrator: large screen real-time display titration curve, intelligent exchange unit with chip, high-resolution measurement input hardware, support USB micro printer, mouse control operation, instrument dialogue suitable for ordinary The user is easy to operate and familiar with in a short time. In addition, it is very robust and ideal for routine laboratory analysis.
· easy installation
· Intelligent exchange unit with titration reagent monitoring function
· High-resolution signal input to ensure accurate results
· Large screen real-time display of titration curve
· Support USB micro printer
· Can use 869 compact sample autosampler
The main technical parameters
Dosing equipment: straight pull exchange unit
Intelligent exchange unit, built-in data chip
Burette resolution: 1 / 10,000 (one ten thousandth)
Mode of operation: keyboard and mouse
Menu language: English
Titration stand, stirrer: 801 magnetic titration stirrer or 802 spiral stirrer
MEAS: measuring pH / mV / T
CAL: pH correction (5 points)
SET to set the end point mode
MET equal volume titration
DET dynamic titration
Connect balance, printer, USB keyboard, USB mouse, USB storage,
Barcode reader: 1 USB port or RS 232 or USB Box (optional)
Large screen real-time curve
PC / LIMS report
Compliant with GLP / GMP
Methods and results are directly stored in USB storage
Connect balance: RS 232 or USB Box (optional)
Connect the sample processor via the Remote interface
Manual operation: measurement, mixing, stirring
Application field
· Acid-base titration, for example: Oxalic acid (aqueous / non-aqueous)
· Redox titration, for example: iodine value, iron (II) content
· Precipitation titration, for example: chloride content
· Complexometric titration, eg calcium content
· Photometric titration, measured at 523 nm or 610 nm
· Titration with polarized electrodes (Ipol, Upol)
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