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.
Is there a process or substance to keep hooks cleaned without taking them off the paint line?
Ask an Expert Published: April 11, 2014
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
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
Has the Texas Commission on Environmental Quality approved TBAC (tertiary butyl acetate) as a VOC-exempt solvent?
Ask an Expert Published: March 21, 2014
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
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
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
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