Purity Dairies, one of Nashville's oldest employers, is hosting a job fair on Wednesday. The event will be held from 2 p.m. to 7 p.m. at Purity Dairies located at 360 Murfreesboro Road. Officials said the business is looking to fill several route sale positions as a result of getting the Metro school contract this year. Applications must possess a CDL B class license or a CDL permit and must be 18-years-old or older. Previous route sales experience is a plus. For more on Purity, visit their Web site.