http://www.infectioncontroltoday.com/articles/2014/08/joint-commission-alert-is-a-another-wakeup-call-for-awareness-of-improper-hld-or-sterilization.aspx
When getting test strips out of a bottle the reagent pad may appear slightly purple instead of blue. This is ok, the color of the reagent pad out of the bottle does not impact the testing.