A combustion pipettte is an apparatus for the reaction of liquids under a mild electric current and a supply of oxygen. In this experiment the test solution is a mixture of agar and oxalic acid in the presence of an electrolyte called cadmium chloride and an oxidant potassium permanganate. The voltage applied is 105VDC and a current of about 300mADC
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Combustion pipette Wikipedia(Text) CC BY-SA