To lay down the procedure for operation of Metrohm 794 Basic Titrino.
1.0 PURPOSE:
1.1 To lay down the procedure for operation of Metrohm 794 Basic Titrino.
2.0 SCOPE:
2.1 This procedure is applicable for Quality Control department.
3.0 RESPONSIBILITY:
3.1 Junior Assistant/Senior Assistant – QC
3.2 Senior Executive – QC
4.0 ACCOUNTABILITY:
4.1 Manager – QC
4.2 Asst. Manager – QC
5.0 PROCEDURE:
5.1 Creating new methods:
5.1.1 PC controlled operation:
5.1.1.1 Switch on the Instrument and the PC.
5.1.1.2 Double Click on the Tinet 2.5 Icon.
5.1.1.3 Metrohm Tinet window appears on the screen.
5.1.1.4 Click Methods on Metrohm Tinet window.
5.1.1.5 Go to File / New. A window appears with two Icons.
5.1.1.6 First Icon is start Icon. Second Icon is Edit Icon with three dots on it.
5.1.1.7 Double Click the Edit Icon.
5.1.1.8 Select Titration / DET or MET (Mode of titration) / U or pH (Measured quantity) and Click. Now the icon is highlighted with the Mode and Measured quantity (e.g. DET U or MET pH) on it and another Edit icon is created.
5.1.1.9 Double Click on the mode and Measured quantity (e.g. DET U or MET pH) icon.
5.1.1.10 Click Parameters. Parameters window appears. Set the parameters as per requirement and Click O.K.
5.1.1.11 Click on save data. Select the parameters to be saved and Click O.K. Click O.K. again.
5.1.1.12 Double Click on the Edit icon. Select Results / calculations and Click.
5.1.1.13 Now the icon is highlighted with Calculations and another Edit icon is created.
5.1.1.14 Double Click on Calculations icon. Fill the Result name, quantity, formula, unit etc., and Click O.K.
5.1.1.15 Double Click on Edit icon. Select Results / Reports and Click.
5.1.1.16 Now the icon is highlighted with Reports and another Edit icon is created.
5.1.1.17 Double Click on Reports icon. Report Window appears. Fill the Proc. Name, Header and Footer etc. as per Requirement.
5.1.1.18 Click on Database. Select the database from Save in data base field and Click O.K.
5.1.1.19 If you want to store the data”s in new database, then click the Edit icon with three dots in Reports Window. Fill the database name and Click O.K.
5.1.1.20 Click on Print layout. Edit the text and curve parameters as required. Deselect the “Print immediately” option to get print when required.
5.1.1.21 Click O.K. Go to File / Save As. Enter the Method name in the Name field and Click O.K.
5.1.2 Key pad interface operation:
5.1.2.1 Switch on the instrument.
5.1.2.2 Press key repeatedly to select “DET”/”MET”.
5.1.2.3 Confirm “DET” /”MET”by pressing .
5.1.2.4 Selected mode is displayed on the screen.
5.1.2.5 Press on the keypad twice. “Store Method” is displayed. Press .
5.1.2.6 “Method name” is displayed. Enter the method name using alphabet keys on the pad and press .
5.1.2.7 Press key on the keypad.
5.1.2.8 Titration parameters are displayed. define the parameters as required.
5.1.2.9 Press key. “Formula” is displayed. Press . “RS?” is displayed.
5.1.2.10 Press on the keypad. Press “RS1” is displayed.
5.1.2.11 Define the formula.
5.1.2.12 To correct the formula press .
5.1.2.13 Define “RS1” - Text, decimal places and unit as required and press twice.
5.1.2.14 Press and feed the values of the formula variables and constants as prompted in the display and press .
5.1.2.15 Press four times. ”Report” is displayed. Press . Select the report type by pressing repeatedly till the required method is displayed and then press .
5.2.2.5 The selected method name is displayed.
5.3 Analysis:
5.3.1 PC controlled operation:
5.3.1.1 Fill the user name, Remark, Id1, Id2, Id3, sample size etc. details. In the sample data Box,
5.3.1.2 Weigh recommended quantity of sample and transfer it to the titration vessel. Fit the appropriate electrode(s) and burette tip properly. Switch on Stirring.
5.3.1.3 When the status message is shown as “ready”, click the start icon to start the titration.
5.3.1.4 After the titration is over switch off the stirrer. Remove the electrode from titration vessel and wash it with solvent.
5.3.1.5 To take the printout of report, go to Window and click on Silo Report. The report is displayed. Click on print icon.
5.3.1.6 To view the results, go to Metrohm Tinet Window and click results. The Result Window appears with the list of results of determinations.
5.3.1.7 After the titration is over for the day, close the Metrohm Tinet window. Switch of the Instrument and the PC.
Note: In case the results are not read automatically after completion of titration, go to results window by Clicking Results in Metrohm Tinet Window. Select any one of the cells in the Row showing latest result. Go to File/Read results and Click. From List files of type, select all files. Select the appropriate Database name and Click O.K. The results are automatically read in the Results Window.
5.3.1.8 Key pad interface operation:
5.3.1.8.1 Weigh recommended quantity of sample and transfer it to the titration vessel. Fit the appropriate electrode(s) and burette tip properly. Switch on Stirring. Press key on the keypad/unit Feed the appropriate values as prompted by the display and press enter. The titration starts. The report is printed on completed of the titration.
5.3.1.8.2 After the titration is over switch off the stirrer. Remove the electrode from titration vessel and wash it with solvent.
Note: preserve the electrodes appropriately as recommended by the manufacturer.
Titrino, titrino, print immediately, store method, electrode, prompted
