Labtron Oil and Grease Analyzer is a tabletop unit with a dismountable optical system and electrical modulation source. It has a testing range of 0.12 mg/L to 100 mg/L, with a 0.12 mg/L limit. Features include a lock-in amplifier and wave number range of 3400 cm⁻¹ to 2400 cm⁻¹.