Major Major Urinator PROBLEM !

Recently purchased a Urinator/QF for randoms at work. Well, i figured keep the QF in the urinator bag, if i need it just add the 9v, Holy F@ck, checked my urinator after 2 days found that the steel heating element bar thats in the bag is RUSTING!!! contaminated my Qf sample with tiny rust particles...$150 in the garbage..SO anyone using one DO NOT keep synthetic piss in there for periods of time ,Thank god i checked it !!........But i will say this, the urinator works flawlessly at keeping temps.