Hydraulic Oil Analysis

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Hydraulic Oil Testing Parameters and Test Methods
PARAMETERS TEST METHODS
Total Acid Number(TAN)/ Base Number
Viscosity @ 40 °C / Viscosity @ 100 °C
Water content
Pentane Insolubles
Flash point
Wear Metals & Contaminants
Iron
Chromium
Silicon
Aluminium
Lead
Copper
Tin
Particle Count
• > 4 µ
• > 6 µ
• > 14 µ
• > 21 µ
• > 38 µ
• > 70 µ
ASTM D 974/ ASTM D 2896
ASTM D 445
ASTM D 6304 / ASTM D 95
ASTM D 893
ASTM D 92
ASTM D 5185







ISO 4406