We have used this product for some time now, and the quality is always good - clean and no sediment, and the packaging is good too.
It is a very good strength for brass and stainless steel, so may need a slight dilution for copper circuit boards.
The only difficulty we have with it is breaking the tamper proof seal, which is hidden beneath a lip on the lid preventing the use of a tool, so a really firm grip is required to twist and break the seal.