To test the accuracy of CM-moisture meters. A vial with water together
with a CM-vial must give a reading of 1 bar on the manometer.
Attention: Crash the vials with carefull turning movements in order to get a complete reaction be-tween water and calcium carbide and avoid plashing of the water to the walls of the flask.
Art. Nr.: 19888
Test-phail for CM-meter 10 pcs
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