Sartorius stedim BioWelder Operation Manual page 22

After closing the cover the unit arrives in position displayed.
Next steps are indicated in the display.
Insert a new blade in the way displayed.
Insert the Calibration Holder very carefully (do not touch the thermocouple)
and close the holder afterwards.
Measuring instrument has to be suitable for thermo couple element type K
(NiCr-Ni), class 2 as per EN60584.
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