This analysis is not usually performed for maintenance. This test is used for recycled refrigerants to measure the degree of contamination from other refrigerant gases. Contamination is reported as a percentage of the total liquid volume of the sample. $55.50 Turn-Around Time: NormalRUSH (+55.50) Refrigerant Sample Kit: Not IncludedDOT Cylinder Kit (+73.50) View DOT Refrigerant Cylinder