{
  "schema_version": "compare-page.v2",
  "page_id": "freezing-breast-milk-in-these-glass-baby-bottles",
  "url": "https://robotrunk.com/compare/want/freezing-breast-milk-in-these-glass-baby-bottles",
  "title": "Freezing breast milk in these glass baby bottles",
  "question": "Can breast milk be frozen in these glass baby bottles?",
  "answer": "Lifefactory 4oz Glass Baby Bottle: The bottle can be used to freeze liquids when following the Care & Use Guide. For freezing, store upright, do not fill to the top, and leave at least 2oz/58 ml of open space from the neck to allow for expansion and prevent glass breaking.\nHaakaa Generation 3 Glass Baby Bottle: The glass bottle can be heated and frozen.\nLifefactory 9oz Glass Baby Bottle: The borosilicate baby bottle can transition from the freezer to boiling water.",
  "kind": "baby bottle",
  "market": "US",
  "generated_at": "2026-10-17T19:01:59.667Z",
  "columns": [
    "Freezing",
    "Freezing fill guidance",
    "Capacity",
    "Materials"
  ],
  "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": "p1.f1",
      "product": "Lifefactory 4oz Glass Baby Bottle",
      "field": "freezing",
      "value": "The bottle can be used to freeze liquids when following the Care & Use Guide.",
      "stated_as": "Can be used to freeze liquids when following the Care & Use Guide",
      "source_type": "listing",
      "source_url": "https://dd1dfe-a3.myshopify.com/products.json",
      "source_read_at": "2026-10-09T19:03:04.916Z"
    },
    {
      "ref": "p1.f2",
      "product": "Lifefactory 4oz Glass Baby Bottle",
      "field": "safety",
      "value": "The bottles are free of BPA, BPS, phthalates, lead, and latex, and the materials are FDA-approved and meet U.S. and European safety standards.",
      "stated_as": "The bottles are free of BPA, BPS, phthalates, lead, and latex, and the materials are FDA-approved and meet U.S. and European safety standards.",
      "source_type": "review",
      "source_url": "https://glassbabybottle.com/lifefactory-glass-baby-bottles/",
      "source_read_at": "2026-10-10T04:31:28.885Z"
    },
    {
      "ref": "p1.f6",
      "product": "Lifefactory 4oz Glass Baby Bottle",
      "field": "freezing instructions",
      "value": "For freezing, store upright, do not fill to the top, and leave at least 2oz/58 ml of open space from the neck to allow for expansion and prevent glass breaking.",
      "stated_as": "When freezing, store the bottle in an upright position. DO NOT FILL TO TOP. Leave a minimum of 2oz/58 ml of open space from neck of bottle to allow for expansion and prevent glass breaking while frozen.",
      "source_type": "guide",
      "source_url": "https://lifefactory.com/pages/faq",
      "source_read_at": "2026-10-10T04:29:51.032Z"
    },
    {
      "ref": "p3.f2",
      "product": "Lifefactory 9oz Glass Baby Bottle",
      "field": "capacity",
      "value": "The bottle holds 9 oz (265 ml).",
      "stated_as": "9 oz (265 ml)",
      "source_type": "guide",
      "source_url": "https://lifefactory.com/products/9oz-glass-baby-bottle",
      "source_read_at": "2026-09-25T17:18:47.109Z"
    },
    {
      "ref": "p3.f11",
      "product": "Lifefactory 9oz Glass Baby Bottle",
      "field": "materials",
      "value": "The bottle is made from thermal-shock-resistant borosilicate glass.",
      "stated_as": "Made with high quality thermal shock-resistant borosilicate glass",
      "source_type": "guide",
      "source_url": "https://lifefactory.com/products/9oz-glass-baby-bottle",
      "source_read_at": "2026-09-25T17:18:47.109Z"
    },
    {
      "ref": "p3.f12",
      "product": "Lifefactory 9oz Glass Baby Bottle",
      "field": "temperature resistance",
      "value": "The borosilicate baby bottle can transition from the freezer to boiling water.",
      "stated_as": "This allows the baby bottle to go from the freezer to boiling water pot.",
      "source_type": "guide",
      "source_url": "https://lifefactory.com/pages/faq",
      "source_read_at": "2026-09-25T17:18:49.792Z"
    },
    {
      "ref": "p5.f1",
      "product": "Haakaa Generation 3 Glass Baby Bottle",
      "field": "Capacity",
      "value": "The bottle holds 3 oz/90 ml.",
      "stated_as": "Haakaa Generation 3 Glass Baby Bottle 3 oz/90 ml, 1 PK",
      "source_type": "listing",
      "source_url": "https://temp2016.myshopify.com/products.json",
      "source_read_at": "2026-09-26T19:13:24.408Z"
    },
    {
      "ref": "p5.f2",
      "product": "Haakaa Generation 3 Glass Baby Bottle",
      "field": "Materials",
      "value": "It is made with borosilicate glass, food-grade silicone, and PP.",
      "stated_as": "Made with temperature-resistant borosilicate glass, food grade silicone and PP.",
      "source_type": "listing",
      "source_url": "https://temp2016.myshopify.com/products.json",
      "source_read_at": "2026-09-26T19:13:24.408Z"
    },
    {
      "ref": "p5.f3",
      "product": "Haakaa Generation 3 Glass Baby Bottle",
      "field": "Temperature use",
      "value": "The glass bottle can be heated and frozen.",
      "stated_as": "making them safe to heat and freeze",
      "source_type": "listing",
      "source_url": "https://temp2016.myshopify.com/products.json",
      "source_read_at": "2026-09-26T19:13:24.408Z"
    }
  ],
  "rows": [
    {
      "rank": 1,
      "merchant": {
        "slug": "albeebaby-com",
        "display_name": "albeebaby.com"
      },
      "product_id": "gid://shopify/Product/9577459220711",
      "name": "Lifefactory 4oz Glass Baby Bottle",
      "url": "/products/ucp/albeebaby-com/9577459220711",
      "why": "The bottle can be used to freeze liquids when following the Care & Use Guide.",
      "cells": [
        {
          "column": "Freezing",
          "fact": {
            "field": "freezing",
            "value": "The bottle can be used to freeze liquids when following the Care & Use Guide.",
            "stated_as": "Can be used to freeze liquids when following the Care & Use Guide",
            "source_type": "listing",
            "source_url": "https://dd1dfe-a3.myshopify.com/products.json",
            "source_read_at": "2026-10-09T19:03:04.916Z"
          }
        },
        {
          "column": "Freezing fill guidance",
          "fact": {
            "field": "freezing instructions",
            "value": "For freezing, store upright, do not fill to the top, and leave at least 2oz/58 ml of open space from the neck to allow for expansion and prevent glass breaking.",
            "stated_as": "When freezing, store the bottle in an upright position. DO NOT FILL TO TOP. Leave a minimum of 2oz/58 ml of open space from neck of bottle to allow for expansion and prevent glass breaking while frozen.",
            "source_type": "guide",
            "source_url": "https://lifefactory.com/pages/faq",
            "source_read_at": "2026-10-10T04:29:51.032Z"
          }
        },
        {
          "column": "Capacity",
          "fact": null
        },
        {
          "column": "Materials",
          "fact": {
            "field": "safety",
            "value": "The bottles are free of BPA, BPS, phthalates, lead, and latex, and the materials are FDA-approved and meet U.S. and European safety standards.",
            "stated_as": "The bottles are free of BPA, BPS, phthalates, lead, and latex, and the materials are FDA-approved and meet U.S. and European safety standards.",
            "source_type": "review",
            "source_url": "https://glassbabybottle.com/lifefactory-glass-baby-bottles/",
            "source_read_at": "2026-10-10T04:31:28.885Z"
          }
        }
      ]
    },
    {
      "rank": 2,
      "merchant": {
        "slug": "haakaausa-com",
        "display_name": "haakaausa.com"
      },
      "product_id": "gid://shopify/Product/5646562099349",
      "name": "Haakaa Generation 3 Glass Baby Bottle",
      "url": "/products/ucp/haakaausa-com/5646562099349",
      "why": "The glass bottle can be heated and frozen.",
      "cells": [
        {
          "column": "Freezing",
          "fact": {
            "field": "Temperature use",
            "value": "The glass bottle can be heated and frozen.",
            "stated_as": "making them safe to heat and freeze",
            "source_type": "listing",
            "source_url": "https://temp2016.myshopify.com/products.json",
            "source_read_at": "2026-09-26T19:13:24.408Z"
          }
        },
        {
          "column": "Freezing fill guidance",
          "fact": null
        },
        {
          "column": "Capacity",
          "fact": {
            "field": "Capacity",
            "value": "The bottle holds 3 oz/90 ml.",
            "stated_as": "Haakaa Generation 3 Glass Baby Bottle 3 oz/90 ml, 1 PK",
            "source_type": "listing",
            "source_url": "https://temp2016.myshopify.com/products.json",
            "source_read_at": "2026-09-26T19:13:24.408Z"
          }
        },
        {
          "column": "Materials",
          "fact": {
            "field": "Materials",
            "value": "It is made with borosilicate glass, food-grade silicone, and PP.",
            "stated_as": "Made with temperature-resistant borosilicate glass, food grade silicone and PP.",
            "source_type": "listing",
            "source_url": "https://temp2016.myshopify.com/products.json",
            "source_read_at": "2026-09-26T19:13:24.408Z"
          }
        }
      ]
    },
    {
      "rank": 3,
      "merchant": {
        "slug": "anbbaby-com",
        "display_name": "anbbaby.com"
      },
      "product_id": "gid://shopify/Product/6739338297430",
      "name": "Lifefactory 9oz Glass Baby Bottle",
      "url": "/products/ucp/anbbaby-com/6739338297430",
      "why": "The borosilicate baby bottle can transition from the freezer to boiling water.",
      "cells": [
        {
          "column": "Freezing",
          "fact": {
            "field": "temperature resistance",
            "value": "The borosilicate baby bottle can transition from the freezer to boiling water.",
            "stated_as": "This allows the baby bottle to go from the freezer to boiling water pot.",
            "source_type": "guide",
            "source_url": "https://lifefactory.com/pages/faq",
            "source_read_at": "2026-09-25T17:18:49.792Z"
          }
        },
        {
          "column": "Freezing fill guidance",
          "fact": null
        },
        {
          "column": "Capacity",
          "fact": {
            "field": "capacity",
            "value": "The bottle holds 9 oz (265 ml).",
            "stated_as": "9 oz (265 ml)",
            "source_type": "guide",
            "source_url": "https://lifefactory.com/products/9oz-glass-baby-bottle",
            "source_read_at": "2026-09-25T17:18:47.109Z"
          }
        },
        {
          "column": "Materials",
          "fact": {
            "field": "materials",
            "value": "The bottle is made from thermal-shock-resistant borosilicate glass.",
            "stated_as": "Made with high quality thermal shock-resistant borosilicate glass",
            "source_type": "guide",
            "source_url": "https://lifefactory.com/products/9oz-glass-baby-bottle",
            "source_read_at": "2026-09-25T17:18:47.109Z"
          }
        }
      ]
    }
  ]
}