ASTM D1552:16(R2021) pdf free download – Standard Test Method for Sulfur in Petroleum Products by High Temperature Combustion and Infrared (IR) Detection or Thermal Conductivity Detection (TCD).
12.2.1 Following instrument manufacturer
recommendations, allow the system to warni up and the furnace to reach an 1150 °C operating temperature.
12.2.2 Mix or swirl the test sample thoroughly to ensure homogeneity. Select the appropriate test specimen site as recommended by the instrument manufacturer. As an example. for liquid samples, take up to 0.13 g for analysis and for solid samples, take up to 0.4 g for analysis.
12.2.3 Ltermine and store the system blank value.
12.2.4 Weigh solid samples into combustion containers and record the net masses. For liquid samples, follow 12.2.4.1 to 12.2 .4.3.
12.2.4.1 Add combustion promoter, if used, to combustion container Using scoop or spatula.
12.2.4.2 Place combustion container on the balance and tare.
12.2.4.3 Weigh an appropriate amount of the sample onto the combustion promoter. Seal tin coinbust ion container before recording mass, Record and enter the mass of sample.
12.2.5 Initiate gas flow and load sample into furnace.
12.2.6 When the analysis is complete. read the result from the instrument.
12.2.7 Prepare furnace and instrument for next run according to manufacturer’s recommendation.
12.2.8 Perform a second determination and average the two values for a single result.
12.3 In cases of dispute between procedures, Procedure A shall be considered the referee procedure.
13. Calculation
13.1 Report all results using the microprocessor.
13.2 Report the average of two results.
14. Rcport
14.1 In the range from mass fraction sulfur 0.05 to 5.00, report to the nearest mass fraction of 0.01 %. In the range of mass fraction sulfur S % to 30 % by mass sulfur, report to the nearest 0.1 %.
14.2 Report the following information: Results were obtained according to Test Method D1552. Procedure A or Procedure B.
15. Quality Control
15.1 Confirm the performance of the test procedure by analyzing a quality control sample that is stable and representative of the sample of interest,
15.1.1 When the quality control/quality assurance protocols are already established in the testing facility, these may be used to confirm the reliability of the test result.
15.1.2 When there is no quality control/quality assurance protocol established in the testing facility. Appendix Xl can he used for this purpose.
12.2.1 Following instrument manufacturer
recommendations, allow the system to warni up and the furnace to reach an 1150 °C operating temperature.
12.2.2 Mix or swirl the test sample thoroughly to ensure homogeneity. Select the appropriate test specimen site as recommended by the instrument manufacturer. As an example. for liquid samples, take up to 0.13 g for analysis and for solid samples, take up to 0.4 g for analysis.
12.2.3 Ltermine and store the system blank value.
12.2.4 Weigh solid samples into combustion containers and record the net masses. For liquid samples, follow 12.2.4.1 to 12.2 .4.3.
12.2.4.1 Add combustion promoter, if used, to combustion container Using scoop or spatula.
12.2.4.2 Place combustion container on the balance and tare.
12.2.4.3 Weigh an appropriate amount of the sample onto the combustion promoter. Seal tin coinbust ion container before recording mass, Record and enter the mass of sample.
12.2.5 Initiate gas flow and load sample into furnace.
12.2.6 When the analysis is complete. read the result from the instrument.
12.2.7 Prepare furnace and instrument for next run according to manufacturer’s recommendation.
12.2.8 Perform a second determination and average the two values for a single result.
12.3 In cases of dispute between procedures, Procedure A shall be considered the referee procedure.
13. Calculation
13.1 Report all results using the microprocessor.
13.2 Report the average of two results.
14. Rcport
14.1 In the range from mass fraction sulfur 0.05 to 5.00, report to the nearest mass fraction of 0.01 %. In the range of mass fraction sulfur S % to 30 % by mass sulfur, report to the nearest 0.1 %.
14.2 Report the following information: Results were obtained according to Test Method D1552. Procedure A or Procedure B.
15. Quality Control
15.1 Confirm the performance of the test procedure by analyzing a quality control sample that is stable and representative of the sample of interest,
15.1.1 When the quality control/quality assurance protocols are already established in the testing facility, these may be used to confirm the reliability of the test result.
15.1.2 When there is no quality control/quality assurance protocol established in the testing facility. Appendix Xl can he used for this purpose.