ASTM D6971-04 - 1.7.2004
 
1. Scope

1.1 This test method covers the voltammetric determination of hindered phenol and aromatic amine antioxidants in new or used type non-zinc turbine oils in concentrations from 0.0075 mass % up to concentrations found in new oils by measuring the amount of current flow at a specified voltage in the produced voltammogram.

1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

 
2. Referenced Documents

D2272-22

Standard Test Method for Oxidation Stability of Steam Turbine Oils by Rotating Pressure Vessel

D4378-24

Standard Practice for In-Service Monitoring of Mineral Turbine Oils for Steam, Gas, and Combined Cycle Turbines

D6224-23

Standard Practice for In-Service Monitoring of Lubricating Oil for Auxiliary Power Plant Equipment

D6810-22

Standard Test Method for Measurement of Hindered Phenolic Antioxidant Content in Non-Zinc Turbine Oils by Linear Sweep Voltammetry

ISO 6743 Part 4,

Lubricants, Industrial Oils, and Related Products

D4057-22

Standard Practice for Manual Sampling of Petroleum and Petroleum Products

D1193-24

Standard Specification for Reagent Water