Eisco Hoffman's Electrolysis Apparatus With PTFE Key Stopcock

Hoffman's apparatus is used for demonstrating the decomposition of water, determination of chemical composition by electrolysis and has applications in the evaluation of the electrochemical equivalent of hydrogen.

The glass unit has two connected limbs, each of approximately 50ml capacity (graduated 2 to 50ml), integral reservoir tube and funnel-shaped bulb, with a PTFE stopcock at the top of each limb.

* Supplied with 2 carbon and 2 platinum electrodes * Requires a 12V DC power supply * Must be set up vertically using a clamp and stand (sold separately) * Chemicals required: water, molar sodium, or potassium sulphate or sulphuric acid * Eisco type CH0740B