4.2.2 The WD shall either be provided with
a) means to carry out an automatic leak test on the endoscope which shall be completed before the load comes into contact with process fluids in the WD, or
b) instructions for use that include the requirement to carry out the test manually prior to processing through the WD.
NOTE 1 An alternative method specified by the endoscope manufacturer can be used for determining the integrity of the endoscope when appropriate.
NOTE 2 WDs with an automatic leak test can include a user selectable option to repeat the leak test at the end of the process and/or independently of a normal process cycle.