Coupon Preparation Cleaning

Q. How do I clean metal substrates in coupon preparation when testing adhesive bonds?

A. When cleaning metal substrates, like coupons, prior to use in bond testing, it is important to have a thoroughly clean substrate with which to begin.  We recommend using a warm or hot 1% solution of Alconox® Powdered Precision Cleaner (1.25 oz/gal or 10 g/L) followed by a thorough water rinse to clean off residues that can cause bonding problems on metal coupons.

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