RADWAG MYA 5.3Y.F1 Microbalance - Manual (Page 100)

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The adapter has been designed to minimize evaporation occurring in liquid
handling procedures. It consists of a minimized weighing chamber installed
inside the weighing chamber of a balance. The adapter features an
evaporation ring and a dedicated weighing pan for central locating of the
measuring vessel.
Application of the adapter for pipettes calibration prevents from liquid
evaporation during calibration process. Small dimensions of the adapter,
combined with the evaporation ring enable maintaining high humidity rate
inside the weighing chamber and the measuring vessel, thus stopping liquid
evaporation process.
Carried out research proved that the adapter for pipettes calibration eliminates
or considerably reduces liquid evaporation process, which is essential for
correct gravimetric calibration of piston pipettes.
Selecting an appropriate adapter and balance mostly depends on type of
calibrated pipettes.
Before starting pipettes calibration process, assembly the adapter inside
balance’s weighing chamber, and insert data on pipettes to be calibrated,
including complete pipette characteristics and values of errors (see: Database
of Pipettes).
The following step is setting process’s main option:
• Number of measurements
• Request batch number (YES/NO)
• Operation with ISO 8655 (YES/NO)
• Acquire ambient conditions from THB module (YES/NO)
Caution:
Description of options and settings are given in point 24.1 of this user manual.
After setting the above options, go to pipettes calibration process.
Follow below pipettes calibration procedure:
1. Press < Select pipette> key;
2. Select a pipette for testing from displayed list;
3. On selecting, the software returns to the main window, and name of
selected pipette is visible in the grey coloured workspace;
4. Press < Start> key in the bottom bar of the display;
5. If option is enabled (set to ) a window is
opened for inserting the batch number, and accepting the value;
6. A window is opened for inserting values of ambient conditions parameters
read from the external sensors (temperature, humidity, pressure and
water temperature), on inserting press < Accept> key;
If option is enabled (set
to , the software automatically acquires data from the THB module
on temperature, humidity and atmospheric pressure. The value of water
temperature has to be inserted manually, and confirmed by pressing <
Accept> key;
7. The software returns to the main window, and the grey coloured
workspace displays the following data: tested volume and process status
. The task bar displays commands and hits for a user on the