MIl-STD-171F
follows:
5.4.4.1.1.1 Materials and equipment. The materials and equipment required are as
a. PQ80 Check (indicator): The formulation contains 10 parts by weight, of sodium
diethyldithiocarbamate trihydrate (see 5.4.7) and 90 parts by weight of distilled water. b. Dropper: An ordinary glass tube eyedropper may be used.
5.4.4.1.1.2 Test procedure. Two drops of PQ80 Check (indicator) shall be applied to the wood surface at both ends of the board and the middle. An immediate dark brown coloration and the spreading of the drops shall indicate the presence of the PQ80 treatment.
5.4.4.1.2 Alternate method.
follows:
5.4.4.1.2.1 Material and equipment. The materials and equipment required are as
a. Reagent. Dissolve 0.5 grams chrome axurol S concentrate (see 5.4.8) and 5.0 grams sodium acetate in 80 ml of distilled water and then dilute further to 500 ml total with distilled water.
b. Sprayer. A common manual aerosol sprayer type applicator shall be used.
5.4.4.1.2.2 Test procedure. Spray solution over surface of dried wood. A deep blue color reveals the presence of copper (from the copper-8-quinolinolate)."
5.4.4.2 Presence of M-GARD W550 (zinc naphthenate) emulsifiable preservative.
5.4.4.2.1 Primary method
follows:
5.4.4.2.1.1 Materials and equipment. The materials and equipment required are as
a. Reagent. Dissolve 0.1 grams of dithizone (diphenylthiocarbazone) (see 5.4.9) in
100 ml of chloroform (Note: Solutions should be made daily)
b. Sprayer. A common manual aerosol sprayer type applicator shall be used.
5.4.4.2.1.2 Test procedure. Spray solution evenly over dried wood. The indicator will turn pink when zinc (M-GARD W550) is present. The pink color fades with light.
5.4.4.2.2 Alternate method.
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