Work for verifying the test and analysis ability is conducted by securing the preciseness of the results of test analysis through preciseness comparison test with related organizations in Korea and participating in the comparison test held by official test organization for improving reliability of test results.
※ Aforementioned types of oil are subject to change according to circumstances.
|Fuel/LPG field||Vehicle gasoline||Octane value, heavy oil feature, sulfur content, steam pressure, etc.|
|Vehicle diesel||Density, sulfur content, flexibility, coefficient of viscosity, flashing point|
|Kerosene 2 type||Flash point, Sulfur Content, Distillation 90% etc.|
|LPG 2 type||Analysis, steam pressure etc.|
|Lubricant/ grease/asphalt field||Gasoline for internal combustion engine||Flashing point of internal engine lubricant, pour point, coefficient of viscosity, density, etc.|
|Turbine oil||Flashing point, pour point, coefficient of viscosity, etc.|
|Automatic transmission oil||flashing point, pour point, foamability, etc.|
|Ball and roller bearing grease||Mixture, appropriate point, mixture stability, etc.|
|Straight asphalt||Penetration, flashing point, etc.|
|Bio-diesel field||Bio-diesel (BD100)||Fatty acid methyl ester content, acid stability, coefficient of viscosity, total acid value, density, filter blocking point, etc.|
Robust StatisticsMethod for minimizing the influence of extreme values on the average or standard deviation estimates and also lowering the weight on extreme value in the data group
Grubbs statisticsMethod for comparing the value calculated by dividing the difference between each test value and average by the standard deviation and comparing it with acceptance limit value and also the abnormal values with allowed error among the labs
Z-ScoreValue regulating the result values in each participating lab on the groups as a criterion for indicating the performance of test values in the comparison method between labs as a numeric value