A TAN (Total Acid Number) is a measure of the acidity of the oil. An oil's acidity levels can be affected by oxidation, additive degradation and oil degradation.

The TAN value in conjunction with other oil analysis tests can give greater insight into the condition of the oil, and ultimately, the condition of the machine which the oil is lubricating.

A TAN test, particularly when conducted as part of a regular program of oil analysis condition monitoring, is an important predictive maintenance check to help ensure the condition and reliability of plant equipment.

An oil's acidity level can be raised as a result of the oil oxidising due to age, or as a result of excessive operating temperatures.

An increased TAN is often an indication of gum and lacquer build-up on the inside of a mechanical system. Further effects include an increase in viscosity (the film thickness of an oil) and an increase in system corrosion.

By conducting TAN testing and oil analysis, Maintenance Engineers can make informed decisions on when to replace lubricants or maintain machines, based on the condition of the equipment, rather than conducting time-based maintenance which is often costly and unnecessary.

• Industrial Applications for a TAN Test
• Hydraulic Lubricants
• Gearbox Oils
• Gas or Steam Turbine Oils
• Gas Engine Crankcases
• Aviation Oils

BRAND: GESERCO, FRANCE

TAN Test Kit

The GESERCO TAN Test is designed for determining simply and rapidly the oil acidity index (AN) on the operation site of the lubricated equipment. The measurement method consists in adding various reagents to the oil in order to induce a change of colour.

The volume of reagent required for changing the colour is precisely monitored and allows calculating the AN (Acid Number) value in mg kOH/g.

The test is simple and rapid, and the kit includes a detailed testing and interpretation guide so that the engineer can make immediate decisions for maintaining the lubricated equipment and increasing its lifespan.