Subjects will measure their vaginal pH at 24 (+/-2) hour intervals for 5 days (Days 2-6) as outpatients and record the pH test results, and any change in vaginal comfort, in a provided diary. Subjects will also record any activities engaged in from the abstinence criteria in the study exclusion list, if applicable, each day. On Day 7, subjects will return to the clinic with their diaries, have their vaginal pH and Amsel criteria determined by the clinic staff, and queried as to any vaginal discomfort (vaginal comfort assessment) over the course of the study, as self-recorded in their diaries.