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

-----

Water treatment coupon preparation

I am a technical sales person in water treatment. I am desirous to know if there is any standard or supporting write up which suggests that metal corrosion coupons which are used to evaluate corrosion protection performance of cooling water treatments should be passivated to avoid the initial "flash corrosion" which may mislead the result. As I understand leading water treatment chemical companies are using passivated coupons for evaluating their treatment program performance.

Pradeep Samajdar
- New Delhi, Delhi, INDIA
2003

A. ASTM G1-03 and ASTM G4 standards will give you more information on the corrosion coupon testing procedures.

Manickam Valliappan
Corrosion Management Services - India
2003

On my understanding, coupons (MS, CU or SS) should not be passivated before application in the water treatment system. Using of passivated coupons may give misleading figures in terms of corrosion units - MPY.

S.Santhanakrishnan
- Pondicherry - INDIA
December 10, 2008

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: