ASTM D6595 Method for Wear Metals and Contaminants in Used Lubricating Oils
ASTM D6595 Standard Test Method for Determination of Wear Metals and Contaminants in Used Lubricating Oils or Used Hydraulic Fluids by Rotating Disc Electrode Atomic Emission Spectrometry
12. Calibration
12.1 Factory Calibration - The analytical range for each element is established through the analysis of organometallic standards at known concentrations. A calibration curve for each element is established and correction factors are set to produce a linear response. Analyses of test specimens must be performed within the linear range of response. The typical elements and recommended wavelengths determined in the used oil analysis applications are listed in Table 1.
12.2 Routine Standardization - A minimum of a two point routine standardization shall be performed if the instrument fails the validation check or at the start of each working shift. A minimum of three analyses shall be made using the blank and working standard.
