{
  "schema_version": "compare-page.v2",
  "page_id": "breast-pump-milk-output-per-session",
  "url": "https://robotrunk.com/compare/want/breast-pump-milk-output-per-session",
  "title": "Breast pump milk output per session",
  "question": "How much milk does each breast pump remove per session?",
  "answer": "Medela Swing Maxi Hands-Free: The store claims the collection cups' 105° open angle results in 11.8% more milk. Each hands-free collection cup holds up to 5 oz / 150 mL of breast milk. The video shows the hands-free kit has three collection-cup parts, a lanyard, built-in rechargeable battery and USB charging, plus two breast-shield sizes.\nWillow Pump Willow Go: In testing it expressed the same number of ounces as a Spectra S1. Willow Go is marketed with hospital-strength suction up to 295 mmHg.\nMedela Harmony Manual Breast Pump: A parent review reports collecting 110 mL on the first use and about 90 mL in 10 minutes on most mornings. It needs no electricity or battery.",
  "kind": "breast pump",
  "market": "US",
  "generated_at": "2026-10-31T08:50:03.150Z",
  "columns": [
    "Milk output",
    "Suction or capacity",
    "Power"
  ],
  "notices": {
    "facts": "Every value in the table is a fact RoboTrunk checked, linked to the page it came from. A dash means no checked fact fills that cell.",
    "price": "Prices and stock change, so this page prints neither: each product name links to its RoboTrunk page, which shows them live."
  },
  "cited_facts": [
    {
      "ref": "p3.f6",
      "product": "Medela Harmony Manual Breast Pump",
      "field": "power",
      "value": "It needs no electricity or battery.",
      "stated_as": "they’re light and portable, don't need electricity or a battery and are easy to use.",
      "source_type": "guide",
      "source_url": "https://www.medela.com/en-us/breastfeeding-pumping/products/pumps/manual/harmony-manual-breast-pump?productId=1021",
      "source_read_at": "2026-10-24T03:58:57.868Z"
    },
    {
      "ref": "p3.f10",
      "product": "Medela Harmony Manual Breast Pump",
      "field": "output",
      "value": "A parent review reports collecting 110 mL on the first use and about 90 mL in 10 minutes on most mornings.",
      "stated_as": "A parent review reports collecting 110 mL on the first use and about 90 mL in 10 minutes on most mornings.",
      "source_type": "review",
      "source_url": "https://newbornbaby.com.au/review/medela-harmony-manual-breast-pump-mum-review-by-erin/",
      "source_read_at": "2026-10-24T04:00:13.410Z"
    },
    {
      "ref": "p4.f2",
      "product": "Willow Pump Willow Go",
      "field": "suction",
      "value": "Willow Go is marketed with hospital-strength suction up to 295 mmHg.",
      "stated_as": "Hospital-strength suction with 295mmHg max",
      "source_type": "guide",
      "source_url": "https://willowpump.myshopify.com/products/willow-go-pump-kit",
      "source_read_at": "2026-10-26T00:49:44.431Z"
    },
    {
      "ref": "p4.f5",
      "product": "Willow Pump Willow Go",
      "field": "output",
      "value": "In testing it expressed the same number of ounces as a Spectra S1.",
      "stated_as": "In testing it expressed the same number of ounces as a Spectra S1.",
      "source_type": "review",
      "source_url": "https://www.wired.com/review/willow-go/",
      "source_read_at": "2026-10-26T00:50:21.428Z"
    },
    {
      "ref": "p5.f1",
      "product": "Medela Swing Maxi Hands-Free",
      "field": "milk output claim",
      "value": "The store claims the collection cups' 105° open angle results in 11.8% more milk.",
      "stated_as": "More Milk – Powerful suction in a compact design, combined with the anatomically designed collection cups with patented 105° open angle resulting in 11.8% more milk",
      "source_type": "listing",
      "source_url": "https://love-me-do-baby.myshopify.com/products.json",
      "source_read_at": "2026-10-23T19:34:14.013Z"
    },
    {
      "ref": "p5.f2",
      "product": "Medela Swing Maxi Hands-Free",
      "field": "what is included",
      "value": "The video shows the hands-free kit has three collection-cup parts, a lanyard, built-in rechargeable battery and USB charging, plus two breast-shield sizes.",
      "stated_as": "The video shows the hands-free kit has three collection-cup parts, a lanyard, built-in rechargeable battery and USB charging, plus two breast-shield sizes.",
      "source_type": "review",
      "source_url": "https://www.youtube.com/watch?v=C-3DGxAr6yA",
      "source_read_at": "2026-10-24T03:54:29.595Z"
    },
    {
      "ref": "p5.f11",
      "product": "Medela Swing Maxi Hands-Free",
      "field": "cup capacity",
      "value": "Each hands-free collection cup holds up to 5 oz / 150 mL of breast milk.",
      "stated_as": "The Hands-free Collection Cups can hold up to 5 oz / 150 mL of breast milk in each cup.",
      "source_type": "guide",
      "source_url": "https://www.medela.com/en-ca/breastfeeding-pumping/products/pumps/hands-free-electric/swing-maxi-hands-free?productId=38461",
      "source_read_at": "2026-10-24T03:49:48.974Z"
    }
  ],
  "rows": [
    {
      "rank": 1,
      "merchant": {
        "slug": "lovemedobaby-com",
        "display_name": "lovemedobaby.com"
      },
      "product_id": "gid://shopify/Product/6707252789382",
      "name": "Medela Swing Maxi Hands-Free",
      "url": "/products/ucp/lovemedobaby-com/6707252789382",
      "why": "The store claims the collection cups' 105° open angle results in 11.8% more milk.",
      "cells": [
        {
          "column": "Milk output",
          "fact": {
            "field": "milk output claim",
            "value": "The store claims the collection cups' 105° open angle results in 11.8% more milk.",
            "stated_as": "More Milk – Powerful suction in a compact design, combined with the anatomically designed collection cups with patented 105° open angle resulting in 11.8% more milk",
            "source_type": "listing",
            "source_url": "https://love-me-do-baby.myshopify.com/products.json",
            "source_read_at": "2026-10-23T19:34:14.013Z"
          }
        },
        {
          "column": "Suction or capacity",
          "fact": {
            "field": "cup capacity",
            "value": "Each hands-free collection cup holds up to 5 oz / 150 mL of breast milk.",
            "stated_as": "The Hands-free Collection Cups can hold up to 5 oz / 150 mL of breast milk in each cup.",
            "source_type": "guide",
            "source_url": "https://www.medela.com/en-ca/breastfeeding-pumping/products/pumps/hands-free-electric/swing-maxi-hands-free?productId=38461",
            "source_read_at": "2026-10-24T03:49:48.974Z"
          }
        },
        {
          "column": "Power",
          "fact": {
            "field": "what is included",
            "value": "The video shows the hands-free kit has three collection-cup parts, a lanyard, built-in rechargeable battery and USB charging, plus two breast-shield sizes.",
            "stated_as": "The video shows the hands-free kit has three collection-cup parts, a lanyard, built-in rechargeable battery and USB charging, plus two breast-shield sizes.",
            "source_type": "review",
            "source_url": "https://www.youtube.com/watch?v=C-3DGxAr6yA",
            "source_read_at": "2026-10-24T03:54:29.595Z"
          }
        }
      ]
    },
    {
      "rank": 2,
      "merchant": {
        "slug": "onewillow-com",
        "display_name": "onewillow.com"
      },
      "product_id": "gid://shopify/Product/6705010016349",
      "name": "Willow Pump Willow Go",
      "url": "/products/ucp/onewillow-com/6705010016349",
      "why": "In testing it expressed the same number of ounces as a Spectra S1.",
      "cells": [
        {
          "column": "Milk output",
          "fact": {
            "field": "output",
            "value": "In testing it expressed the same number of ounces as a Spectra S1.",
            "stated_as": "In testing it expressed the same number of ounces as a Spectra S1.",
            "source_type": "review",
            "source_url": "https://www.wired.com/review/willow-go/",
            "source_read_at": "2026-10-26T00:50:21.428Z"
          }
        },
        {
          "column": "Suction or capacity",
          "fact": {
            "field": "suction",
            "value": "Willow Go is marketed with hospital-strength suction up to 295 mmHg.",
            "stated_as": "Hospital-strength suction with 295mmHg max",
            "source_type": "guide",
            "source_url": "https://willowpump.myshopify.com/products/willow-go-pump-kit",
            "source_read_at": "2026-10-26T00:49:44.431Z"
          }
        },
        {
          "column": "Power",
          "fact": null
        }
      ]
    },
    {
      "rank": 3,
      "merchant": {
        "slug": "lovemedobaby-com",
        "display_name": "lovemedobaby.com"
      },
      "product_id": "gid://shopify/Product/2214800835",
      "name": "Medela Harmony Manual Breast Pump",
      "url": "/products/ucp/lovemedobaby-com/2214800835",
      "why": "A parent review reports collecting 110 mL on the first use and about 90 mL in 10 minutes on most mornings.",
      "cells": [
        {
          "column": "Milk output",
          "fact": {
            "field": "output",
            "value": "A parent review reports collecting 110 mL on the first use and about 90 mL in 10 minutes on most mornings.",
            "stated_as": "A parent review reports collecting 110 mL on the first use and about 90 mL in 10 minutes on most mornings.",
            "source_type": "review",
            "source_url": "https://newbornbaby.com.au/review/medela-harmony-manual-breast-pump-mum-review-by-erin/",
            "source_read_at": "2026-10-24T04:00:13.410Z"
          }
        },
        {
          "column": "Suction or capacity",
          "fact": null
        },
        {
          "column": "Power",
          "fact": {
            "field": "power",
            "value": "It needs no electricity or battery.",
            "stated_as": "they’re light and portable, don't need electricity or a battery and are easy to use.",
            "source_type": "guide",
            "source_url": "https://www.medela.com/en-us/breastfeeding-pumping/products/pumps/manual/harmony-manual-breast-pump?productId=1021",
            "source_read_at": "2026-10-24T03:58:57.868Z"
          }
        }
      ]
    }
  ]
}