EUROLAB, with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of ASTM D7415 testing. This test method covers the monitoring of sulfate by-products in in-service petroleum and hydrocarbon-based diesel sump engine and engine oils with a sulfur content of more than 500 ppm. This test method should not be used when low sulfur fuels are used for combustion.
This test method uses Fourier Transform Infrared (FT-IR) spectrometry to monitor the deposition of sulfate by-products in in-service petroleum and hydrocarbon-based lubricants as a result of normal machine operation. Sulphate by-products can result from the introduction of sulfur through combustion or from the oxidation of sulfur-containing base oil additives. This test method is designed as a quick, simple spectroscopic control for monitoring sulfate by-products in in-service petroleum and hydrocarbon-based lubricants to help diagnose machine operating condition based on measuring the level of sulfate byproducts.
Obtaining FT-IR spectral data to measure sulfate by-products in in-service oil and lubricant samples is described in Application D7418. In this test method, measurement and data interpretation parameters for sulfate by-products are presented using both direct trend analysis and differential (spectral subtraction) trend analysis.
This test method is based on the trend of spectral changes associated with sulfate by-products of petroleum and hydrocarbon-based lubricants in use. Warnings or alarm limits can be set on the basis of a fixed minimum value for a single measurement, or alternatively, based on the rate of change of the measured response.
It is not the intent of this test method to establish or recommend normal, stimulus, alert, or alert limits for any machine. These limits should be established with advice and guidance from the machine manufacturer and maintenance group.
This test method is for petroleum and hydrocarbon-based lubricants and does not apply to ester-based oils, including polyol esters or phosphate esters.
Values stated in SI units will be accepted as standard. No other units of measurement are included in this standard.
This standard does not purport to address all, if any, safety concerns associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health and environmental practices and to determine the applicability of regulatory restrictions prior to use.
EUROLAB assists manufacturers with ASTM D7415 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.
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