I just did QF + Quest and just go in and pour. It was 106 outside that day and My Bottle temp said 100 after a hour and a half under the boys. After the pour the cup said 100. one blow and swirl and it went 99....one more it went 98. I carried it in the pouch of My fruit of the looms. One problem...I put it back in My underware empty after using and the boys got quite warm. The employer called 2 days later and said My test was clean.