-
ASTM D1093 for Acidity of Hydrocarbon Liquids and Their Distillation Residues
ASTM D1093 for Acidity of Hydrocarbon Liquids and Their Distillation Residues6. Apparatus6.1 Centrifuge Tube, cone-shaped, 100-mL capacity; calibration not necessary.6.2 Centrifuge, capable of swinging two centrifuge tubes at 1500 rpm.NOTE 2 - Apparatus used for Test Method D91 is satisfactory.7. Reagents7.1 ...
-
ASTM D1093 for Acidity of Hydrocarbon Liquids and Their Distillation Residues
ASTM D1093 for Acidity of Hydrocarbon Liquids and Their Distillation Residues4. Summary of Test Method4.1 The sample of distillation residue or hydrocarbon liquid is shaken with water and the aqueous layer tested for acidity to methyl orange indicator.4.2 The aqueous layer can also be tested for basicity ...
-
ASTM D1093 for Acidity of Hydrocarbon Liquids and Their Distillation Residues
ASTM D1093 for Acidity of Hydrocarbon Liquids and Their Distillation Residues1. Scope1.1 This test method covers the qualitative determination of the acidity of hydrocarbon liquids and their distillation residues. Warning - See Note 1.NOTE 1 - Warning: Many hydrocarbon liquids are extremely flammable. ...
-
ASTM D1747 Standard Test Method for Refractive Index of Viscous Materials
ASTM D1747 Standard Test Method for Refractive Index of Viscous Materials13. Calculation and Reporting13.1 Correct the observed refractive index by the amount shown in the calibration curve. Report the value of refractive index as:14. Precision and Bias14.1 The precision of the test method as obtained ...
-
ASTM D1747 Standard Test Method for Refractive Index of Viscous Materials
ASTM D1747 Standard Test Method for Refractive Index of Viscous Materials12. Procedure12.1 Thoroughly clean the prism faces as described in 10.2. Adjust the thermostat so that the temperature indicated by the thermocouple placed between the faces of the closed prism (loaded with oil) is within 0.2°C ...
-
ASTM D1747 Standard Test Method for Refractive Index of Viscous Materials
ASTM D1747 Standard Test Method for Refractive Index of Viscous Materials10. Preparation of Apparatus10.1 The refractometer shall be kept scrupulously clean at all times. Dust and oil, if allowed to accumulate on any part of the instrument, will find its way into the moving parts, causing wear and eventual ...
-
ASTM D1747 Standard Test Method for Refractive Index of Viscous Materials
ASTM D1747 Standard Test Method for Refractive Index of Viscous Materials6. Apparatus6.1 Refractometer, precision Abbé-type, having a range in refractive index from 1.30 to 1.63. Other instruments reading to at least four decimal places may be used.NOTE 2 - When other instruments are used, follow the ...
-
ASTM D1747 Standard Test Method for Refractive Index of Viscous Materials
ASTM D1747 Standard Test Method for Refractive Index of Viscous Materials4. Summary of Test Method4.1 The refractive index normally is measured by the critical angle method using monochromatic light from a sodium lamp. The instrument is previously adjusted by means of calibration obtained with certified ...
-
ASTM D1747 Standard Test Method for Refractive Index of Viscous Materials
ASTM D1747 Standard Test Method for Refractive Index of Viscous Materials1. Scope1.1 This test method covers the measurement of refractive indexes, accurate to two units in the fourth decimal place, of transparent and light-colored viscous hydrocarbon liquids and melted solids which have refractive indexes ...
-
ASTM D3231 Standard Test Method for Phosphorus in Gasoline
ASTM D3231 Standard Test Method for Phosphorus in Gasoline11. Quality Control11.1 Confirm the performance of the instrument or the test procedure by analyzing a quality control (QC) sample (6.10).11.2 Prior to monitoring the measurement process, the user of the method needs to determine the average value ...
