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3 Place the nipple sizing card around your nipple. Make sure there is a space
of 0.5–2 mm between your nipple and the hole in the nipple sizing card.
4 Try various holes to see which opening fits your nipple best. If needed, view
fitting in a mirror.
5 Select the breast shield (and the insert) that matches the hole that fits your
nipple best.
6 Breast shield sizes 21 mm, 24 mm, and insert size 19 mm are included in the
package.
7 Breast shield size 28 mm and insert sizes 15 mm, 17 mm, 26 mm can be
purchased separately (see 'Ordering accessories and spare parts').
8 Start pumping by using the selected size(s) and closely monitor your
comfort. After pumping, the nipple size might slightly change. If pumping
becomes uncomfortable, measure your nipple size again and switch to
another size, if needed.
Note: You might need different sizes for your left nipple and your right
nipple. Nipples may also change during your pumping journey. For example,
the nipple size may change just after giving birth, after several months of
breastfeeding or pumping, or may be different again after a second
pregnancy.
Assembling the collection cups
Note: The figure numbers mentioned below refer to the numbers of the
figures on the back foldout pages of this user manual.
Warning: Be careful, when you have disinfected the collection cup
parts by boiling them, they can be very hot. To prevent burns, only
start assembling the collection cups when disinfected parts have
cooled down.
Warning: Wash your hands thoroughly with soap and water
before you touch collection cup parts and breasts to prevent
contamination. Avoid touching the inside of the cup.
Make sure you have cleaned and disinfected the collection cup parts that
come into contact with the breast and breast milk. Gather all parts and place
them on a clean surface.
Check the parts for damage before use and replace them if necessary.
Note: Correct placement of the breast shield, membrane, insert (if used),
valve and silicone tube is essential for the breast pump to form a proper
vacuum and to reduce the risk of milk leakage.
1 Wash your hands thoroughly with soap and water.