If you are planning to start a new career. Consider becoming a De-Ionizer Operator.

So what a De-Ionizer Operator does?

Here is a short description:

Tends equipment that purifies glycerin by deionization process: Starts pumps to force glycerin slurry through resin beds in series of purification tanks. Observes flowmeters and pressure gauges, and adjusts controls as necessary to meet process standards. Tests slurry for acidity periodically, using litmus paper. Draws samples of purified glycerin for laboratory analysis. Back-flushes tanks with acid solution to regenerate resin, as necessary.