Labmate Automatic Oil Acidity Tester determines acid value in transformer oil and turbine oil across a 0.0001–5 mg KOH/g range at 0.0001 mg KOH/g resolution. Potentiometric titration with automatic liquid addition and endpoint detection delivers 0.004 mg KOH/g repeatability for oil degradation and quality monitoring. Manufactured for power generation, transformer maintenance, and petrochemical laboratories performing acid value quantification and oil testing. ASTM D664 compliant.