Brake Fluid Dot4 Analysis

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Dot4 Brake Oil Testing Parameters and Test Methods
PARAMETERS TEST METHODS
Equilibrium Reflux Boiling PointºC (ERBP)
Wet Equilibrium Reflux Boiling Point º C
Specific Gravity @ 20 º C
pH Value
Viscosity @100ºC
Viscosity @-40ºC 		ASTM D 1120
ASTM D 1120
ASTM D 4052
ASTM D 1287
ASTM D 445
ASTM D 445