![]() This ensures that you can find the best fit for your size if needed. But you have the choice of five different sizes made by the company with 21, 30, and 36 mm options available from Medela. The Medela PISA offers two sizes as standard: 24 and 27 mm. You may find that other brands are compatible but this is very much trial and error. However, there are no other sizes offered by the company. The Spectra S2 comes with two sizes: 24 and 28 mm (2 each). If this is the case, you may need to consider pumping in a separate room from your sleeping baby or in the bathroom at work if you do not wish to be noticed or disturb anyone. This may still seem to be a bit noisy, especially when you are in a completely silent room. The difference is small enough for it to be insignificant for your decision in most cases.īoth measure between 45 to 46 decibels (respectively), which is similar to the hum of a refrigerator. If you had an incredibly sharp ear you would notice the Spectra marginally quieter. It is nearly a dead heat between these two models. Suction strength in the 200-300 mm/Hg range will align with your baby’s suckling strength and ensure continuous milk flow.īoth the Spectra S2 (50-280 mm/Hg) and Medela PISA (40-235 mm/Hg) have suction speed in this range, with multiple settings that will guide your body through the range for optimal performance. High suction speed is mostly useful for moms who have trouble expressing milk, and will not necessarily yield more breast milk per pumping session. ![]() The standard unit of measuring vacuum pressure is in millimeters of mercury (mm/Hg), which is “a unit of pressure equal to the pressure exerted by a column of mercury 1 millimeter high at 0☌.” This is the unit used to measure a breast pump’s suction strength. ![]() If you were comparing the Spectra vs Medela on this key area of performance you will find them hard to split. Similarly, the Medela pump has a patented 2-Phase Expression Technology that uses the Stimulation Phase to initiate milk letdown (the equivalent of the massage mode setting).īoth do a great job at getting your milk to max flow almost as quickly as your baby does and keeps it flowing quickly and efficiently as it switches between settings to phase 2: Expression Mode. It operates at 70 cycles per minute and the vacuum level is not as strong as it is in expression mode. The Spectra S2 employs Natural Nursing Technology, which includes massage mode settings. After the breast milk reaches max flow, your baby’s sucking will slow down, becoming more drawn out as she is receiving and swallowing milk.This triggers your body’s letdown reflex, which tells your breasts to release their milk. A nursing baby begins with strong, rapid sucks (about 2 per second).Natural Feel and Pump Efficiencyīreast pumps need to mimic your baby’s sucking pattern to be most effective. But in practice, you would hardly notice a difference between the two. We have declared a winner for some of these based on the specs alone. The following categories we feel are less important to your buying decision as performance is very similar for both breast pumps.
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