GD-8019B Existent Gum Tester
GD-17144 Micro Method Carbon Residue Tester
GD-0165 Vacuum Distillation Tester
GDD-1A Automatic Volumetric Karl Fischer Mositure Titrator
GD-1792 Distillate Fuels Mercaptan Sulfur Tester
GD-511B Mechanical Impurity Tester (Weight method)
GD-8018D Gasoline Oxidation Stability Tester (Induction period method)
GD-0175 Distillate Fuel Oil Oxidation Stability Tester
GD-8017A Petroleum Products Vapor Pressure Tester(Reid Methods)
GD-0308 Lubricating Oil Air Release Value Tester