No passwords, no registration, no paywalls, no popups, no AI

As an Amazon Associate & eBay Partner we earn from affil links

finishing.com -- The Home Page of the Finishing Industry

Search our quarter-million Q&As

Home of the finishing HOTLINE since 1989

-----

Testing for free iron content in acidic solutions

I currently have 2 stainless steel passivation tanks. A 21% nitric acid solution with sodium dichromate and a 50% nitric acid solution. I also have a stainless steel etch tank filled with Wyandotte DS9-314. What is the lab procedure to check these solutions for free iron? The passivation and etch are in accordance with ASTM A967.

Lawrence Cole
- Ogden, Utah, USA
2002

An A.A. unit (atomic absorption) ⇦ on eBay or Amazon [affil link] .

Bill Hemp
tech svc. w/ chemical supplier - Grand Rapids, Michigan
2002

Sorry! Finishing.com is temporarily Read-Only.
Ted Mooney is retiring but I have several offers to take it over.
We're working hard to make sure we find it the best new home.

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: