In many cases non-zinc anodes outperform actual zinc anodes, depending upon the type of metal you need to protect and the nature of the water in which the metal being protected is immersed. It all has to do with the voltage of the anode when referenced against a standard.
Chemical engineers at pharmaceutical manufacturers have the same duties as those of consumer goods manufacturers, but they have additional duties as well. Their focus is on developing new drugs or products to enhance the health of humans and animals.
The average salary for a Chemical Engineer is R293,444 per year. Pay for this job rises steadily for more experienced workers, but goes down noticeably for the few employees with more than 20 years' experience. People in this job generally don't have more than 10 years' experience.