Distribution date: 15 October 2018 | Final date for Comment: 14 December 2018

This Draft Uganda Standard covers the test method for the quantitative determination of barium, boron, calcium, copper, magnesium, molybdenum, phosphorus, sulfur, and zinc in unused lubricating oils and additive packages.  The precision statements are valid for dilutions in which the mass % sample in solvent is held constant in the range of 1 to 5 mass % oil. The precision tables define the concentration ranges covered in the interlaboratory study. However, both lower and higher concentrations can be determined by this test method. The low concentration limits are dependent on the sensitivity of the ICP instrument and the dilution factor. The high concentration limits are determined by the product of the maximum concentration defined by the linear calibration curve and the sample dilution factor.  Sulfur can be determined if the instrument can operate at a wavelength of 180 nm. The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  

Products Covered: Lubricating Oils

Regulation Type: Regular notification

Distribution date: 15 October 2018 | Final date for Comment: 14 December 2018

This Draft Uganda Standard covers the test method for the estimation of the amount of engine oil volatilized at 371°C (700°F). This test method can also be used to estimate the amount of oil volatilized at any temperature between 126°C and 371°C, if so desired. This test method is limited to samples having an initial boiling point (IBP) greater than 126°C (259°F) or the first calibration point and to samples containing lubricant base oils with end points less than 615°C (1139°F) or the last n-paraffins in the calibration mixture. By using some instruments and columns, it is possible to extend the useful range of the test method. This test method uses the principles of simulated distillation methodology. This test method may be applied to both lubricant oil base stocks and finished lubricants containing additive packages. These additive packages generally contain high molecular weight, nonvolatile components that do not elute from the chromatographic column under the test conditions. The calculation procedure used in this test method assumes that all of the sample elutes from the column and is detected with uniform response. This assumption is not true for samples with nonvolatile additives, and application of this test method under such conditions will yield results higher than expected. For this reason, results by this test method are reported as area percent of oil.  

Products Covered: Engine Oil

Regulation Type: Regular notification

Distribution date: 15 October 2018 | Final date for Comment: 14 December 2018

This Draft Uganda Standard covers the test method for the estimation of the amount of engine oil volatilized at 371°C (700°F). This test method can also be used to estimate the amount of oil volatilized at any temperature between 126°C and 371°C, if so desired. This test method is limited to samples having an initial boiling point (IBP) greater than 126°C (259°F) or the first calibration point and to samples containing lubricant base oils with end points less than 615°C (1139°F) or the last n-paraffins in the calibration mixture. By using some instruments and columns, it is possible to extend the useful range of the test method. This test method uses the principles of simulated distillation methodology. This test method may be applied to both lubricant oil base stocks and finished lubricants containing additive packages. These additive packages generally contain high molecular weight, nonvolatile components that do not elute from the chromatographic column under the test conditions. The calculation procedure used in this test method assumes that all of the sample elutes from the column and is detected with uniform response. This assumption is not true for samples with nonvolatile additives, and application of this test method under such conditions will yield results higher than expected. For this reason, results by this test method are reported as area percent of oil.  

Products Covered: Engine Oil

Regulation Type: Regular notification

Distribution date: 15 October 2018 | Final date for Comment: 14 December 2018

This Draft Uganda Standard covers the test method for the determination of the foaming characteristics of lubricating oils at 24 °C and 93.5 °C. Means of empirically rating the foaming tendency and the stability of the foam are described.

Products Covered: Lubricating oils.

Regulation Type: Regular notification

Distribution date: 15 October 2018 | Final date for Comment: 14 December 2018

This Draft Uganda Standard covers the test method for the determination of the foaming characteristics of lubricating oils at 24 °C and 93.5 °C. Means of empirically rating the foaming tendency and the stability of the foam are described.

Products Covered: Lubricating oils.

Regulation Type: Regular notification

Distribution date: 15 October 2018 | Final date for Comment: 14 December 2018

This Draft Uganda Standard covers the test method for the procedure to determine the amount of deposits formed by automotive engine oils utilizing the thermo-oxidation engine oil simulation test (TEOST).

Products Covered: Engine Oils

Regulation Type: Regular notification

Distribution date: 15 October 2018 | Final date for Comment: 14 December 2018

This Draft Uganda Standard covers the test method for the procedure to determine the amount of deposits formed by automotive engine oils utilizing the thermo-oxidation engine oil simulation test (TEOST).

Products Covered: Engine Oils

Regulation Type: Regular notification

Distribution date: 15 October 2018 | Final date for Comment: 14 December 2018

This Draft Uganda Standard covers the test method for the laboratory determination of the viscosity of engine oils at 150°C and 1.0·106 s−1 using a viscometer having a slightly tapered rotor and stator called the Tapered Bearing Simulator (TBS) Viscometer.

Products Covered: Engine oils

Regulation Type: Regular notification

Distribution date: 15 October 2018 | Final date for Comment: 14 December 2018

This Draft Uganda Standard covers the test method for the laboratory determination of the viscosity of engine oils at 150°C and 1.0·106 s−1 using a viscometer having a slightly tapered rotor and stator called the Tapered Bearing Simulator (TBS) Viscometer.

Products Covered: Engine oils

Regulation Type: Regular notification

Distribution date: 15 October 2018 | Final date for Comment: 14 December 2018

This Draft Uganda Standard covers the test method for the measurement of the yield stress and viscosity of engine oils after cooling at controlled rates over a period exceeding 45 h to a final test temperature between –10 °C and –40 °C. The precision is stated for test temperatures from –40 °C to –15 °C. The viscosity measurements are made at a shear stress of 525 Pa over a shear rate of 0.4 s–1 to 15 s-1. This test method is suitable for measurement of viscosities ranging from 4000 mPas to >400 000 mPas, and is suitable for yield stress measurements of 7 Pa to >350 Pa. This test method is applicable for used diesel oils. The applicability and precision to other used or unused engine oils or to petroleum products other than engine oils has not been determined.  

Products Covered: Engine oils

Regulation Type: Regular notification