Determination of Total Aromatics and Total Saturates in Lube Basestocksby HPLC-RID as per ASTM D7419

User Benefits

- An analytical scale HPLC method for determination of total aromatics and total saturates - Improved separation and simple operation

Introduction

The composition of lubricating oil has a large effect on their characteristics and uses. The determination of, aromatics, saturates, and polar compounds is a key analysis of the lube basestock. The characterization of the composition of lubricating oils is also important for the evaluation of, for example, their interchangeability for use in blending. This application covers the determination of total aromatics and total saturates in additive-free lube basestocks using high performance liquid chromatography (HPLC) with refractive index (RI) detection. The high sensitivity and reproducible method was developed on Nexera HPLC system shown in Figure 1. This method is applicable to samples containing total aromatics in the concentration range from 0.2 to 46 mass % in the lube basestock.

September 14, 2022 GMT