The heat pack by itself takes approximately 1 hour to heat the QF bottle to 100 degrees. Thats why you should microwave the QF bottle for initial heat, then tape or band the heat pack to the back of the bottle. The heat pack wont take as long to heat up once its attached to the preheated QF bottle.

Once the heat pack is activated, it will keep the QF bottle at temp for 6-8 hours in a pocket of clothing.
Burnt Toast Reviewed by Burnt Toast on . Questions about Quick Fix I am planning on using quick fix for the first time in a couple of days for a pre-employment drug test and have a couple questions for anyone who has experience with QF. First, I'm wondering what is the best way to conceal it? Should I put in my underwear or will it probably be alright to just put it in my pocket? Also, I'm wondering what the best method for using the heat pad is since the instructions are not too specific. When using it, I am wondering how long it takes to heat up and Rating: 5