Oleic acid is a fatty acid that occurs naturally in several oils. Peanuts are a good source of high oleic acids that offer added benefits over other edible oils. Peanut breeders, growers, and food manufacturers desire to improve the quality of their products by having high oleic and low linoleic ratio. Typically, laboratories test peanuts’ acid content by gas chromatography (GC). This testing is costly, labor, and time intensive. NIR spectroscopy is a non-destructive test method for rapidly sorting peanuts. The SEEDMEISTER Mark IIIx may tests up to 100 seeds in 4 minutes, which would require more than 24 hours using GC.