I think I found the suggestion to put pump flanges in the refrigerator between pumping on Jack Newman's website.  I had no issues with the flanges being cold as plastic warms quickly.  I also had some raynauld's symptoms that were not made worse by this practice.  Once could run the flanges under warm water if needed.

I found that in the early days of pumping 7 times a day, my hands were a mess from all the washing up.  I started rinsing and placing pump parts in a ziploc bag in the refrigerator between pumping which was a great time and skin saver.  I washed parts well once a day with soap and water.  I had a healthy baby over 1 month old.  Not sure when or if I would suggest this practice for  a premature baby in the NICU.

Cordelia Merritt RN BSN IBCLC



> Speaking of which, what do other Lactnetters tell moms (and hear from
> moms) who are exclusively or mostly pumping about how often they 
> rinse, how often they wash with soap and water, and how often they 
> sterilize the milk-contact parts of their pumps?  I have pointed out 
> to moms that they can switch out bottles and refrigerate empty 
> flange/valve/bottle assemblies to keep microbial growth down between 
> closely spaced pumpings.  If the flange is detachable, it can be 
> easily (unlike the valve portion) washed (or wiped with an approved
> wipe) and stored at room temperature so mom doesn't start pumping with something cold against her skin.

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