Citric Acid: generally included in SSD Solution like a buffer to keep up the pH balance of the solution and stop degradation of active substances.
This Site isn't accessible for the time being. Anything you can https://montyxweo288318.blogsumer.com/29231863/how-much-you-need-to-expect-you-ll-pay-for-a-good-ssd-chemical-solution-and-activation-powder-for-sale