Removing Polyurethane Glue From Stainless Steel Bolts
Q: We are having trouble removing polyurethane glue from stainless steel bolts.
A: Adherent residues can be tough. And clearly glue is adherent, per design.
For this application we want to increase temperature to expedite the cleaning effort as much as possible, and soften the glue. We also want to up the concentration to ensure having sufficient detergent capacity.
Residual Chlorine on Printed Circuit Boards
Q. We have found chlorine present on our printed circuit boards after ultrasonic cleaning and distilled water rinse. As ultrasonic cleaning detergent, we’re using either Liquinox or Detergent 8, but are unsure which one was used on affected boards. Could either be contributing to this issue?
A. It’s highly unlikely that either detergent, or your cleaning process, is the source of the chlorine residue. The cleaning process you described, if using detergent at recommended dilution levels, should successfully remove flux and process residues.
Cleaning Adhesive Residues off Medical Devices
Q: We are looking for recommendations on how to remove adhesive residue left on medical devices after pulling off labels or tape. A. We are aware of many other customers using Detergent 8 to successfully remove different kinds of tough adhesive residues. We suggest using…