I was thinking about doing is filling the urinator with room temperature water before I leave for school and not even worrying about the temperature of it most of the day then towards the end of school plug in the batteries and hope it gets to temperature (I could swap in another set of batteries right before I go to the employer to hold the temperature). Is the urinator capable of heating room temperature urine to 98 degrees with fresh batteries? How long would this take?
Doing your own practice drill (using water in place of urine) will answer this question.

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