The BLITz Clean Up neutralizer can be used after all weld cleaning solutions. With an inbuilt pH indicator, this neutralizer is essential if you want to make sure that all acidic residue has been completely removed. The neutralizer will lightly fizz and foam a yellow to green colour when it reacts with the acidic residue. Once the fizzing and foaming have stopped and the workpiece runs a deep purple, you will know that all of the acidic residues are completely neutralized, simply wash off with water and wipe dry for a clean and neutral surface. Suitable to neutralize B-30, B-50, EKP-50 and EASYkleen All Machine Solutions.