I don't know what the advantage of this developer is. You can change the formula and make PC-TEA. This completely eliminates the sulfite and produces a developer with much better keeping qualities. Triethanolamine (TEA) can be heated safely using a water bath. The resulting concentrate, usually used at 1:50, makes a less toxic and versatile working solution.
Great for those who can get TEA.
Her in europe, TEA is clos to impossible to get, so we have to resort to other methods of doing this.