Parts Cleaning Clinic
David S. Peterson

David S. Peterson

David S. Peterson answers reader questions about aqueous cleaning, solvent cleaning, drying, and pretreatment for plating, painting, and powder coating.

Got a question or comment for David? Send him an email.

The latest from the Parts Cleaning Clinic

Cleaning Ecoat Paint Hooks

Is there a process or substance to keep hooks cleaned without taking them off the paint line?

Ask an Expert Published: April 11, 2014

Titration of Nitric Acid Neutralization

Is a titration using hydrochloric acid for the titrant and phenolphthalein as the indicator the proper method for determining the sodium hydroxide percentage in a nitric passivation process?

Ask an Expert Published: April 04, 2014

Burner Tube Replacement

What would be a good project timeline for installing a new burner tube in a pretreatment tank? What steps would be required?

Ask an Expert Published: March 28, 2014

Tertiary Butyl Acetate Regulations

Has the Texas Commission on Environmental Quality approved TBAC (tertiary butyl acetate) as a VOC-exempt solvent?

Ask an Expert Published: March 21, 2014

Periodic Reverse Electrocleaning

We are running high-speed, reel-to-reel plating of gold-nickel-tin and palladium-nickel, and using bipolar cleaning. I am somewhat confused about electrical connections in bipolar cleaning systems.

Ask an Expert Published: January 06, 2014

Mil-Spec for Compressed Air Quality

Is there a procedure or mil-spec for point-of-use inspection to verify the cleanliness of the compressed air supply used in chemical processing area?

Ask an Expert Published: January 02, 2014

Improving Cleaning Process Throughput

We are spraying and wiping down parts with thinner and acetone, and want to move to some kind of cleaning tank and/or phosphate solution. Can you recommend a system?­

Ask an Expert Published: December 30, 2013

Chlorinated Solvent Acid Acceptance

How can we manage and control stabilization of alkalinity reserves and acid acceptance level of perchloroethylene in metal cleaning applications?

Ask an Expert Published: December 23, 2013


In a dragout /rinsing process, is cold water effective or beneficial after a hot water rinse?

Ask an Expert Published: December 06, 2013


Why do we have problems with cleaning in low-current areas on our barrel alkaline zinc plater?

Ask an Expert Published: December 04, 2013

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