{
  "schema_version": "compare-page.v2",
  "page_id": "freezing-breast-milk-in-glass-baby-bottles",
  "url": "https://robotrunk.com/compare/want/freezing-breast-milk-in-glass-baby-bottles",
  "title": "Freezing breast milk in glass baby bottles",
  "question": "Can breast milk be frozen in a glass baby bottle?",
  "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. Lifefactory 9oz Glass Baby Bottle: The borosilicate baby bottle can transition from the freezer to boiling water.",
  "kind": "baby bottle",
  "market": "US",
  "generated_at": "2026-10-14T03:03:42.846Z",
  "columns": [
    "Freezing",
    "Freezing instructions",
    "Glass heat tolerance"
  ],
  "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": [
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      "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.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.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"
    }
  ],
  "rows": [
    {
      "rank": 1,
      "merchant": {
        "slug": "albeebaby-com",
        "display_name": "albeebaby.com"
      },
      "product_id": "gid://shopify/Product/9577459220711",
      "name": "Lifefactory 4oz Glass Baby Bottle",
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      "why": "The bottle can be used to freeze liquids when following the Care & Use Guide.",
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          "column": "Freezing",
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          }
        },
        {
          "column": "Freezing instructions",
          "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",
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            "source_read_at": "2026-10-10T04:29:51.032Z"
          }
        },
        {
          "column": "Glass heat tolerance",
          "fact": null
        }
      ]
    },
    {
      "rank": 2,
      "merchant": {
        "slug": "anbbaby-com",
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      "product_id": "gid://shopify/Product/6739338297430",
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      "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",
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            "source_read_at": "2026-09-25T17:18:49.792Z"
          }
        },
        {
          "column": "Freezing instructions",
          "fact": null
        },
        {
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          "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",
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    }
  ]
}