Posts by Technical Editor

The difference between cloud point and pour point are as follows- Cloud point Pour point When an oil sample cooled slowly, the temperature at which it appears hazy or cloudy…

Steam emulsification number is the time (in seconds ) required for an emulsion of lubricating oil and water to separate into distinct layers at 900C. Emulsification is the properly of…

The milligrams of KOH required saponifying 1 g of oil known as saponification value determination of saponification value accurately weighed quantity of oil is taken in a flask and 50…

When oil cooled slowly, the temperature at which it appears hazy or cloudy is known as cloud point. The temperature at which oil stops flowing even after tilting the glass…

The milligrams of KOH required to completely neutralize free acid present in 1 g of oils is known as acid value or neutralization number. Determination of acid value The accurately…

The viscosity index of unknown lubricating oil is determined by comparing it with two standard oils. The two types of the standard are paraffinic base oil Pennsylvanian oil or Gulf…

Aniline point or aniline value of a lubricant is the minimum temperature at which equal of aniline and lubricant under test from a homogeneous solution. Determination of aniline point 15…

Viscosity is the measure of internal resistance to motion of a fluid due to cohesion between its own molecules it is measured in mill poise and centipoises. The viscosity of…

The significance of relative viscosity at a different temperature is- The relative viscosity of lubricants increases with a decrease in temperature. This leads to poor lubricating property due to thickening…

Biodegradable oils are combinations of selected biodegradable bases (vegetable oils, rape, sunflower, synthetic esters) which are non-toxic, and special additives which give them their desired properties. Needless to say, the…