Breastfeeding

Inaccurate Measurements on Storage Bags?

Has anyone else run into this issue?  I have the Medela pump and save bags and the Lansinoh bags and both seem to have the same problem - the ounces shown on the pumped bottle don't match the ounces on the bag!

Usually the bags make it seem like there is a half ounce to an ounce MORE than what I think I actually pumped.  With the Medela brand, I'm opening them up all the way so they stand as I pour in the pumped milk from the bottle.  The Lansinoh brand doesn't have the stand up feature and it seems a little bit closer to what is in the bottle but still over.

Do you just trust the bottle? I don't want to dump it into a measuring cup and then into the bag and risk loosing some in all of the transfers. Any suggestions?

Re: Inaccurate Measurements on Storage Bags?

  • Mine are way off. I go off the bottle.
    TTC with PCOS since November 2009
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  • I trust my medela bottle measurements and just mark the correct amount of ounces on the storage bag.
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  • Yes, I also noticed that the storage bags seem designed to make me feel better about pumping but they are not accurate. I go by the bottle I pump into and mark each bag appropriately.
  • I go by the bottle measurements too.
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  • I use the bottle measurements...I've noticed that the bags are always off by about an ounce.
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  • FYI - The Lanosh bags actually say "approximate" amount.  I pump into bottles.  The bottles are accurate.  THen I pour into a bag and write the amount on the bag.

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