On February 18, 2014, Faratech informed us that they stop using TR-173Y.
The reason is as follows.
1. When they compared SST between TR-173Y and Dipsol ZT-444, they found TR-173Y often became white rust 0.5-1.0% before 72hr. But SST of Dipsol never have white rust 0% at 72hr. Even we tried to adjust many condition of TR-173Y, still have this problem.
2. After passivation with TR-173Y, white stain often occur. Even we tried to adjust many condition.