FORD FLTM AQ 106-2-2001 CONTROL TEST - CHROMATE PASSIVATION (Replaces FLTM EU-AQ 006-02).pdf
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1、 FORD LABORATORY TEST METHOD AQ 106-02 Date Action Revisions 2001 01 31 Revised Editorial no technical change A. Cockman 2000 04 25 Editorial no technical change A. Cockman 1989 04 24 Printed copies are uncontrolled Page 1 of 2 Copyright 2001, Ford Global Technologies, Inc. CONTROL TEST - CHROMATE P
2、ASSIVATION Application This test method is used to determine whether zinc or cadmium-plated and chromate passivated components have been adequately rinsed after processing by checking the level of chromate present. Note: This test method is used to monitor chromate as part of the program to minimize
3、 the risk of chromate dermatitis. Apparatus and Materials Required Kessler Tubes 25 mm diameter x 150 mm long Beaker 500 mL Graduated Cylinder 100 mL Dephenylcarbazide Reagent grade Ethyl Alcohol Reagent grade; CAUTION: Low flash point Phosphoric Acid Concentrated: Reagent grade Potassium Dichromate
4、 Reagent grade Distilled or Deionized Water 10 ppm max total dissolved solids (ASTM D1888) Solutions Required Diphenylcarbazide Solution 1 % of solution in ethyl alcohol FORD LABORATORY TEST METHOD AQ 106-02 Page 2 of 2 Copyright 2001, Ford Global Technologies, Inc. Phosphoric Acid Solution 4 % by v
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