UAE Neem Extract as a Corrosion Inhibitor for Carbon Steel in HCl Solution

Figure 2

The electrochemical cell. (1) gas bubbler, (2) B 12 glass socket, (3) Platinum gauze (counter electrode), (4) glass frit, (5) inlet for nitrogen gas, (6) luggin capillary (reference electrode), (7) steel rod (working electrode), (8) epoxy resin, (9) B 24 glass socket, (10) copper wire.