Independent testing
How much independent testing exists for each breast pump
Of the 10 breast pumps we track, 2 have been physically measured by at least one independent lab. Below is every one, ordered by how much independent hands-on evidence stands behind it — densest first.
A coverage record, not a ranking of which is best.
| Product | Independent labs | Metrics measured | Outlets on record |
|---|---|---|---|
| BabyBuddha 2.0 | 1 | 2 | 1 |
| Spectra S2 Plus | 1 | 1 | 1 |
| Elvie Pump (Double) | 0 | 0 | 2 |
| Lansinoh SmartPump 2.0 | 0 | 0 | 1 |
| Medela Freestyle Flex | 0 | 0 | 1 |
| Medela Pump In Style with MaxFlow | 0 | 0 | 1 |
| Motif Luna | 0 | 0 | 1 |
| Spectra S1 Plus | 0 | 0 | 2 |
| Willow 360 (Willow 3.0) | 0 | 0 | 1 |
| Willow Go | 0 | 0 | 1 |
Each figure is a count of what independent testers actually did — how we count. A low count means little independent evidence has been gathered yet, never that a product is worse. See also the Breast Pumps buying guide and the reviewers we cite.