My information is old, but I think still valid.  I understand that cold-sterilising solutions, such as the one mentioned by Kirsten, leaves a salty deposit on the container, that should be rinsed off with boiled water.  My informant, who taught in the pharmacy department of a university, was concerned that use of these solutions could increase sodium intake of infants, unless the container were rinsed.  (Does anyone have a published reference to this?)
         Virginia
         in sunny Brisbane

Kirsten Blacker wrote:
I would use a cold sterilising method such as Milton solution. I'm not sure
if it is in use as much in the USA as in Australia, but that is how I
sterilised everything I wanted to store EBM in when the boys were little.

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