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When Method No. 203B, Vapor Degreasing, is specified for use, aqueous cleaning may be performed with cleaning product in Method No. 202A or alternate cleaner in accordance with chapter 4. A. and B.
2.  Preparation of Cleaning Solutions
WARNING: SOLUTIONS USED FOR CLEANING ARE HAZARDOUS.  AVOID INHALING FUMES, DUST, OR MIST. AVOID CONTACT WITH SKIN.  AFTER PREPARATION, WASH HANDS AND FACE THOROUGHLY.
A.  Method No. 202A: Alkaline Cleaning Solutions Mixing Instructions
WARNING: USE CORRECT PERSONAL PROTECTION.  ALKALINE CLEANING SOLUTIONS ARE HAZARDOUS. AVOID INHALING FUMES OR MIST.  AVOID CONTACT WITH SKIN. AFTER USE, WASH HANDS AND FACE THOROUGHLY.
Prepare alkaline cleaner solution as follows:
(1)  
Dissolve 4 to 6 ounces (118,29 to 177,4 ml) of alkaline cleaner (Diversey 909) (SECTION VII) in each gallon (3,78L) of distilled or de-ionized water used.

(2)
Maintain solution at 130 to 180F (54 to 82C) in an air agitated tank.

Cleaning
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B.  Method No. 202B: Chromate Conversion Coating Mixing Instructions
WARNING: USE CORRECT PERSONAL PROTECTION.  CHROMATE CONVERSION COATING SOLUTIONS ARE HAZARDOUS. AVOID INHALING FUMES, DUST, OR MIST. AVOID CONTACT WITH SKIN.  AFTER PREPARATION, WASH HANDS AND FACE THOROUGHLY.
Prepare chromate conversion coating solution as follows:
NOTE:  Prepare chromate conversion coating solution in small batches.  Use only freshly prepared solutions.
(1)  
Dissolve one ounce (29,57 ml) of powder (Iridite No. 14-2) (SECTION VII) in each quart (946,3 ml) of distilled or de-ionized water used.

(2)  
Maintain solution at 70 to 80F (21 to 27C).

C.  Method No. 202C: Chromic-nitric Pickle Mixing Instructions
WARNING: USE CORRECT PERSONAL PROTECTION.  CHROMIC-NITRIC PICKLE SOLUTIONS ARE HAZARDOUS. AVOID INHALING FUMES, DUST, OR MIST. AVOID CONTACT WITH SKIN. AFTER PREPARATION, WASH HANDS AND FACE THOROUGHLY.
Prepare chromic-nitric pickle solution as follows:
(1)  
Mix 12.0 to 13.5 ounces (0,354 to 0,399 L) of chromic acid flake (SECTION VII) and 1.0 to

1.4 pints (0,47 to 0,66 L) of nitric acid (Federal Specification A-A-59105) (SECTION VII) with enough distilled or de-ionized water to make one gallon (3,78 L).

(2)  
Maintain solution at 70 to 80F (21 to 27C).

D.  Method No. 202D: De-oxidizer Mixing Instructions
WARNING: USE CORRECT PERSONAL PROTECTION.  DE-OXIDIZER SOLUTIONS ARE HAZARDOUS. AVOID INHALING FUMES, DUST, OR MIST.  AVOID CONTACT WITH SKIN. AFTER PREPARATION, WASH HANDS AND FACE THOROUGHLY.
Prepare de-oxidizer solution as follows:
(1)  
Dissolve 8 to 16 ounces (0,236 to 0,473 L) of de-oxidizer (Oakite 34M) (SECTION VII) in one gallon (3,78 L) of distilled or de-ionized water.

(2)  
Maintain solution at 65 to 95F (18 to 35C) in an air agitated tank.

Cleaning
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E.  Method No. 202E: Rust Stripper Mixing Instructions
WARNING: USE CORRECT PERSONAL PROTECTION.  RUST STRIPPER SOLUTIONS ARE HAZARDOUS. AVOID INHALING FUMES, DUST, OR MIST. AVOID CONTACT WITH SKIN. AFTER PREPARATION, WASH HANDS AND FACE THOROUGHLY.
CAUTION: EXERCISE EXTREME CAUTION WHEN PREPARING RUST STRIPPER SOLUTION. MIXING MAY PRODUCE TEMPERATURES EXCEEDING THE BOILING POINT OF THE SOLUTION. ADD OAKITE RUST STRIPPER WHILE AGITATING SOLUTION AS A MEANS TO PREVENT LOCALIZED OVERHEATING.
Prepare rust stripper solution as follows:
WARNING: USE CORRECT PERSONAL PROTECTION.  THIS CHEMICAL SOLUTION CAN CAUSE SKIN, EYE AND LUNG DAMAGE. THE DANGER AND PRECAUTIONS FOR EACH CHEMICAL IS DIFFERENT.
(1)  
Dissolve three to five pounds of rust stripper (Oakite Rustripper) (SECTION VII) in each gallon of distilled or de-ionized water used.
　
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