Kit includes three each prepaid test package, sample bottle, mailer, tubing,  and sampling instructions. Use this kit for engine coolant only.  Kit suitable for conventional coolant only.  Provides elemental analysis, pH, Glycol %, freeze point, boil point, nitrite, SCA number, total dissolved solids, specific conductance, total hardness, and visuals.  Vacuum pump sold separately.  Extended life available by special order.