dont take this the wrong way. no need to get upset. i am giving you my honest reply and i sincerely think that you over react.
your 1st question was "Is the instant hot water thermo flask hot enought to kill bacteria?."

which part of my reply don't you understand? the product that i am selling here is called a hot water flask. not BACTERIA KILLER/BACTERIA FREE THERMO FLASK!
i am telling you what i know.
normal tap water boils to a maximum of 100celcius. you know this right?

when you asked me "Is the instant hot water thermo flask hot enought to kill bacteria?."
i merely replied "Water tops at 100celcius. Whether hot enough to kill bacteria..well..im not qualified to answer that question.
Ive been using it for a couple of months now and im still alive. "
i cant guarantee you that SEERS THERMO FLASK kills bacteria, i know it kills bacteria at 100 clecius but some bacterias might be tougher.
meaning you need to ask your GP for a qualified answer.

taken from yahoo.
Best Answer - Chosen by Asker

Boiling water will be less effective than fairy and water.
The boiling water will kill some (most) of the bacteria, but there are some bacteria that live in extremely hot temperatures. That said the heat should kill most by denaturing the enzymes. The fairy (a detergent) will burst the cells thus killing them. The combination of heat plus detergent will be better as you are taking two different approaches to killing them.
for your NEW question... I am using this for new born babies, infant etc and I need to ask for the safety of these innocent new born.
you have gotta be more specific, for bathing?drinking?cleaning baby's bottle etc?

i will happily answer all your questions to the best of my limited knowledge. but in general .. and i do mean GENERAL ... all thermo flask should be safe for consumption. you should be more concerned about the WATER SUPPLY.

hope i have not offended you this time.