I read the sticky about scalding my milk to address the lipase issue, and I noticed that many women use a bottle warmer to do this. So, I bought a First Years bottle warmer and a digital thermometer. I pump into disposable liners and freeze my milk in them as well, so I tried scalding my milk in the liner. I wasn't sure how much water to put in the bottle warmer, so I filled it up as high as I could. I placed the thermometer in the milk, and my plan was to leave the milk at 168 for 15 seconds, but I noticed that the temperature quickly began to rise past that. So I guaged it as best as I could. Also, as the milk warmed, it started to rise in the liner, and I became a little worried that I wouldn't be able to get it out without burning myself. When I took the liner out, I realized that the liner had actually SHRUNK. So, I obviously need some guidance here. Any other mommas scald their milk in a bottle warmer using disposable liners? If so, how much water? How long should I leave the milk in there if the temperature doesn't remain constant? Why is the liner shrinking? What am I doing wrong?