1. Acid number: ASTM D664
2. Detect dielectric breakdown voltage of insulating oil: ASTM D877
3. Liquid power factor/ dissipation factor: ASTM D924-08
4. Interfacial tension: ASTM D971
5. Specific resistance: ASTM D1169
6. Corrosive sulfur: ASTM D1275
7. Visual examination: ASTM D1524
8. Karl Fischer water: ASTM D1533
9. Detect the dielectric breakdown voltage of filtered and degassed liquids after degassing and filtering: ASTM D1816
10. Gassing tendency under electric field and ionization: ASTM D2300
11. Oxidation stability: ASTM D2440
12. Gas chromatography, test method for detecting dissolved gas dissolved in electrical insulating oil (gas chromatography): ASTM D3612
13. Antioxidant detection (oxidation inhibitor): ASTM D4768 or D2668
14. Particle count: ASTM D6786