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. $53.00 Turn-Around Time: NormalRUSH (+53.00) Refrigerant Sample Kit: Not IncludedDOT Cylinder Kit (+60.00) View DOT Refrigerant Cylinder