Physical and Chemical Analysis of Oils and Greases

SOAP (Spectrographic Oil Analysis Programme) The following analyses are available, and can be undertaken in any combination:

• Kinematic Viscosity at 100°C (cSt)
• Kinematic Viscosity at 40°C (cSt)
• Fuel Dilution (%)
• Total Base Number (mg KOH/g)
• Total Acid Number (mg KOH/g)
• Water (% or ppm)
• Soot (%)
• Free Chloride (ppm)
• Wear Metals (Al, Ag, Cr, Cu, Fe, Ni, Mg, Mn, Na, Pb, Si, Sn, Ti)
• Oxidation Index
• Nitration Index

Three typical analysis schedules are shown below:

Engine schedule

Kinematic Viscosity at 100°C (cSt), Fuel Dilution (%), Total Base Number (mg KOH/g), Soot (%), Water (%), and Wear Metals.

Gearbox schedule

Kinematic Viscosity at 40°C (cSt), Total Acid Number (mg KOH/g), Water (%), Oxidation Index, Nitration Index, and Wear Metals.

Refrigeration schedule

Kinematic Viscosity at 40°C (cSt), Total Acid Number (mg KOH/g), Free Chloride (ppm), Water (ppm), and Wear Metals.

Sample preparation

Oil samples received for physical and chemical analysis are thoroughly mixed before analysis