MessyPig

Buying guide

Glass food storage containers: the lid is the question

Almost every glass container comes with a plastic lid. Which plastic, and whether it touches the food, is what makers rarely say.

Anchor Hocking TrueSeal glass containers, a Pyrex Zero Plastic glass dish with a glass lid, and a Décor Glass Clips container
Anchor Hocking TrueSeal (84), Pyrex Zero Plastic with a glass lid (77, AU) and Décor Glass Clips (73, AU). Makers’ photos.
The short answer

The glass is rarely the problem; the lid is. Pyrex Zero Plastic (77, AU) has a borosilicate glass base and glass lid. Anchor Hocking TrueSeal (84) publishes its glass composition. Décor Glass Clips (73, AU) names borosilicate and a silicone seal.

What the score is, before you read one

It is a disclosure score out of 100, not a safety rating: what it is made of, who tested it, where it is made, whether the claim matches the evidence. A product can score 20 and be perfectly fine to cook in. What a low score means is that nobody outside the company can check. The rubric is here.

Our picks

  • Anchor Hocking TrueSeal round glass containers with blue lids
    Anchor Hocking TrueSealPublishes an oxide formula for its glass. Made in the USA.84/100See the full entry →
  • Pyrex Zero Plastic rectangular glass dish with a glass lid
    Pyrex Zero Plastic Rectangular Container 0.8L (David Jones)Glass base and glass lid, made in France.77/100See the full entry →
  • Décor Premium Glass Clips 1 litre oblong glass container with a four-clip lid
    Décor Premium Glass Clips Oblong 1L (Myer)Borosilicate glass, removable silicone seal.73/100See the full entry →
  • Libbey glass bowls filled with snacks, with green plastic lids
    Libbey Baker’s Basics Glass Bowl Set“Lead free soda lime glass”. Lid resin not named.73/100See the full entry →
Which glass?

Soda-lime and borosilicate handle temperature swings differently. Pyrex’s Australian distributor lists both, from three countries, without saying which you are buying (55). How to tell.

Every glass container in this guide

ProductScore /100What touches the foodOur call
8460/60Best material
7760/60Buy it
7360/60Buy it
7360/60Buy it
7053/60Buy it
7053/60Read the caveats
6653/60Read the caveats
5547/60They won't say
  • Anchor Hocking TrueSeal round glass containers with blue lids
    84/100
    Anchor Hocking TrueSeal · US

    Tempered soda-lime silicate glass

    Touches food 60/60 · Best material

    The full entry →
  • Pyrex Zero Plastic rectangular glass dish with a glass lid
    77/100
    Pyrex Zero Plastic Rectangular Container 0.8L (David Jones) · AU

    Borosilicate glass base AND borosilicate glass lid

    Touches food 60/60 · Buy it

    The full entry →
  • Décor Premium Glass Clips 1 litre oblong glass container with a four-clip lid
    73/100
    Décor Premium Glass Clips Oblong 1L (Myer) · AU

    Borosilicate glass

    Touches food 60/60 · Buy it

    The full entry →
  • Libbey glass bowls filled with snacks, with green plastic lids
    73/100
    Libbey Baker’s Basics Glass Bowl Set · US

    “Lead free soda lime glass” — the glass type actually named

    Touches food 60/60 · Buy it

    The full entry →
  • No maker photo
    70/100
    IKEA 365+ Food Container with Lid, glass 1.2L · AU

    “Heat resistant glass” — type not published

    Touches food 53/60 · Buy it

    The full entry →
  • No maker photo
    70/100
    WECK Mold Jar · US

    Glass, type not named

    Touches food 53/60 · Read the caveats

    The full entry →
  • No maker photo
    66/100
    Ball Mason Jars, Wide Mouth 12-pack · US

    Glass, given only as “Glass”

    Touches food 53/60 · Read the caveats

    The full entry →
  • No maker photo
    55/100
    Pyrex Simply Store (Australian stock) · AU

    Glass type NOT resolved

    Touches food 47/60 · They won't say

    The full entry →

Plastic and stainless containers are on the food storage page and the Australian one.

Questions people ask

Should you store food in plastic or glass containers?

Glass removes the question. One study counted micro- and nanoplastic particles released by plastic tubs when microwaved, and during fridge storage too. What that means for health has not been shown. What the microwave study found.

Are there glass food containers without plastic lids?

Yes. Pyrex Zero Plastic (77, AU) has a borosilicate glass lid; the seal material is not published. WECK jars (70) use glass lids with a natural rubber ring and metal clamps.

What are some good glass bowls for meal prep?

Décor Glass Clips (73, AU) names borosilicate glass and a removable silicone seal, and rates the base oven- and air-fryer-safe. Anchor Hocking TrueSeal (84) is rated to 425°F and for the microwave and freezer.

What are some good glass storage containers for a pantry?

Jars with a glass or metal lid keep plastic out entirely. WECK (70) uses a glass lid and natural rubber ring. Ball Mason jars (66) use tin-plated steel lids, though the lid sealing compound is not named.

Related

Sources

  1. Anchor Hocking TrueSeal — maker or retailer page. www.anchorhocking.com
  2. Pyrex Zero Plastic Rectangular Container 0.8L (David Jones) — maker or retailer page. pyrex.co.uk
  3. Décor Premium Glass Clips Oblong 1L (Myer) — maker or retailer page. decor.com.au
  4. Libbey Baker’s Basics Glass Bowl Set — maker or retailer page. shop.libbey.com
  5. IKEA 365+ Food Container with Lid, glass 1.2L — maker or retailer page. www.ikea.com
  6. WECK Mold Jar — maker or retailer page. weckjars.com
  7. Ball Mason Jars, Wide Mouth 12-pack — maker or retailer page. www.ballmasonjars.com
  8. Pyrex Simply Store (Australian stock) — maker or retailer page. globalkitchenbrands.com.au
  9. MessyPig, Pyrex: borosilicate or soda-lime?. MessyPig, Pyrex: borosilicate or soda-lime?
  10. MessyPig, Is it safe to microwave plastic containers?. MessyPig, Is it safe to microwave plastic containers?
  11. MessyPig materials rubric. MessyPig materials rubric

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New scores, brands that finally answered, and any rule change that affects what you can buy. The list is not open yet — email us and we will add you when it is.