Where the
world gathers for metal finishing
Q&As since 1989


-----

Evaluating how "used" our Alodine 1200 is

I have various jugs of Alodine 1200. Some have been well used and I see that the well used Alodine tends to make the parts more blue than yellow. Is there a test I can do to verify how "used" the different jugs are? I need to have better quality control of my processes but for now I would like to implement a precursor solutions test.

Jon Page
Prototype shop - Denver, Colorado, USA
February 8, 2008

---

First of three simultaneous responses --

You really need to talk to your vendor's tech services about this. They are THE experts on this process.
Since part of the price of the material includes tech services, you have every expectation of getting an honest answer. I would insist on a definitive answer, not a "well, if in doubt, dump the tank" answer which sells more product.

James Watts
- Navarre, Florida
February 11, 2008

---

Second of three simultaneous responses --

Use the syuppliers data sheet, titrate each jug for concentration, check the pH, adjust accordingly back to spec, then test in a bucket with small panels.

Robert H Probert
Robert H Probert Technical Services

Garner, North Carolina

February 11, 2008

---

Third of three simultaneous responses -- February 12, 2008

John

I am not sure if it will work for Alodine 1200 but there is a test for use on Iridite 14-2.

http://www.galladechem.com/specs/macdermid/78659rev2.pdf

Willie Alexander
- Colorado Springs, Colorado