Also in the second test, it was not too much more comfortable. With a little milk in the bottle I tried to heat them in a water bath. As the color then changed, I dropped me a little milk to the hand and this was simply not hot enough. Second failure.
It really falls on very quickly that the band is dependent on the bottle must be filled at least until the tape so that it can display the temperature and depending on where the heat comes the band reacts differently well to the temperature. This results in an inaccuracy that may cause injury to young children. I think it really sensible to check the temperature with your own body.
The first experiments in the microwave (in Steri) and also in the dishwasher went without complications.
But I must also say that the tapes have been well adapted to the different bottles in our household. It is also very convenient that the bands can be labeled permanently or temporarily.
Overall, I can only give three stars *** for the current result.