This part of ISO 6301 specifies tests, procedures and a method of presenting the results concerning the parameters that define the main characteristics to be included in the supplier’s literature of lubricators conforming to ISO 6301-1. This part of ISO 6301 can be applied — to facilitate the comparison of lubricators by standardizing test methods and presentation of test data; — to assist in the proper application of lubricators in compressed-air systems. The tests specified are intended to allow comparison between the different types of lubricators; they are not production tests to be carried out on each lubricator manufactured.