Use E-Prep 249 prior to chromates E-Chrome Ultra Blue, E-Chome Ultra Yellow and E-Chrome Ultra Yellow-Red. Use prior to plating with E-Brite Ultra Cu. Temperature: 65–85° F. Concentration: 30–50% by volume. Time: 3–7 minutes.

E-Prep 249 is a chemical micropolish for use on zinc diecast.

 

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Use E-Prep 249 prior to chromates E-Chrome Ultra Blue, E-Chome Ultra Yellow and E-Chrome Ultra Yellow-Red. Use prior to plating with E-Brite Ultra Cu. Temperature: 65–85° F. Concentration: 30–50% by volume. Time: 3–7 minutes.

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