SELBY-NOACK VOLATILITY TEST

Evaporation Loss / Volatility: The evaporation loss/volatility of engine oils is of particular importance to the automotive industry as it closely relates to oil consumption in an engine and can lead to a change in the properties of the engine lubricant.
A measured quantity of sample is placed in an evaporation crucible and heated to 250°C for 1-hour while a constant flow of air, controlled at 20 mm H2O vacuum, is drawn over its surface to remove the resultant vapors. The loss in mass of the oil is determined by weighing before and after the test and calculating the percent loss.

HISTORY

The original Noack volatility test was introduced to the industry in the 1930’s for determining the evaporation loss of lubricating oils. Now known as Procedure A, it operates with a toxic mixture of compounds known as Wood’s Metal for sample heating.

INNOVATION

In the mid-1990’s, Mr. Selby, and his colleagues at the Savant Group, eliminated the need for Wood’s Metal by devising a noble-metal heater approach. This innovative development was completed in 1997 and Tannas began marketing the first non-Wood’s Metal Noack tester. Novel advancements and updates to the original Selby-Noack® led to the new Tannas Noack S2® Volatility Test.

FEATURES

• Non-Wood’s Metal Sample Heating
• Calibration to lab environment using interchangeable Orifice Tubes – ‘tuneable’ to the atmospheric conditions of each lab.
• Design enhancements for improved test precision and ease of use for high sample workloads and robust day-to-day operation.
• Incorporates metal Reaction Vessel and Quick Connect Fittings for test efficiency and easy cleaning.
• Only Noack System to collect volatile products for further analysis of phosphorus, sulfur, and other elemental oil vapors.
• Used for Phosphorus Emission Index (PEI) and Sulfur Emission Index (SEI) related to phosphorus and sulfur emissions from the combustion chamber.
• Compact, all-in-one design with a small footprint.
• Advanced Automated Software Option.