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FED-STD-228 Test Methods For Cables And Wire, InsulatedThis method is intended for use in determining the thickness of the insulation of insulated wire and cable. It is not recommended for use when the thickness of the insulation is less than 3/64 inch.

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FED-STD-228A
MACHLETT
AUTO-DISPENSING
FIGURE 4131C. Diagram of dispensing burette-Machlett type.
3.1.14 Radiation actinometer solution.
Substances, reagent grade
Grams
Molar
per liter
value
Oxalic acid, hydrated (H2C2O4 2H2O) - - - - - - - - -
6.30
0.050
or oxalic acid, anhydrous (H2C2O4) - - - - - - - - -
4.50
.050
Uranyl sulphate (UO2SO43H2O) - - - - - - - - - - - - -
4.20
.0100
3.1.15 Evaluating solution.
Grams
Oxidation
per liter
equivalent
Potassium permanganate (KMnO4) - - -
3.16
0.100 N
4. PROCEDURE
4.1 Preparation, storage, and dispensing of solutions. The solutions 3.1.14 and 3.1.15, may be prepared
in ordinary diffused light.
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