How to get rid of milton taste from plastic keg?

[Newtons Shed]

Hi all made the mistake of using Milton baby bottle steriliser on a plastic water carrier which has now tainted the taste, how can I get rid of it? I've rinsed it out loads with cold water but can still taste it

Thanks
Andy

 

[pittsy]

hot water and washing up liquid will shift it then cold water after

 

[bobsbeer]

Purple beer line cleaner, if you have any, will also get rid of it.