6 pc. 'Wide Mouth' Culture Jar Lid with Port & Filter

$29.99

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Reliable culture work starts with equipment that supports clean technique. The 6 pc. “Wide Mouth” Culture Jar Lid with Port & Filter set is designed for mushroom cultivators preparing liquid cultures in standard wide-mouth mason jars.

Each lid is made from durable 304 stainless steel, providing strong resistance to rust and repeated-use wear. Compared with ordinary metal lids, stainless steel offers a dependable, reusable surface for ongoing culture work and routine lab handling.

The integrated injection port allows cultures to be inoculated with a syringe while keeping the jar closed, helping reduce unnecessary exposure during transfers. The self-healing port is suited to repeated inoculations when handled with proper sterile technique.

A built-in filter supports filtered gas exchange while helping limit the entry of airborne contaminants. This makes the lids useful for liquid culture applications where maintaining a controlled jar environment is essential.

Designed for wide-mouth mason jars, these culture jar lids are practical for home laboratories, classroom setups, and more advanced indoor cultivation workflows. Jars are not included, so pair the lids with compatible wide-mouth jars and use appropriate sterilization procedures before each run.

With six reusable lids in one kit, this set helps keep multiple cultures organized and ready for consistent mycology lab work. North Spore’s lab supplies are developed with the practical needs of indoor growers and contamination-conscious cultivators in mind.

Frequently Asked Questions

We recommend absolute beginners start with our Spray & Grow Kits, which make growing mushrooms at home super easy.

We want you to have the best possible experience with every North Spore product and guarantee free replacements within 30 days of receipt for any damaged, contaminated, or unusable product.

Absolutely! Mushroom cultivation is a great activity to do with the whole family, whether you'd like to grow indoors or outdoors. If you're new to mushrooms, we recommend starting with a Spray & Grow Kit or a Plant & Grow Kit – both make it easy to grow fresh, organic mushrooms at home.

We are vertically integrated — from culture work all the way to spawn and substrate production — ensuring a quality end product. And our staff mycologists keep up to date on all best practices in our field. Additionally, we have a dedicated QAQC team that tests every batch of grain and substrate before it’s inoculated.

Cluster of brown-capped mushrooms with long, light-colored stems against a white background.

Your Trusted Source for Premium Mushroom Growing Supplies

Whether you’re growing mushrooms at home, in your garden, or at a commercial scale, we offer everything you need to cultivate success. We start with the highest-quality OMRI-listed ingredients, mix them in our state-of-the-art facility, and inoculate them in our custom-built lab, so you can rest easy knowing your product will yield the best results.

Reviews

  • 5 stars: 6 (86%)
  • 4 stars: 1 (14%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
T
TRAVIS PERKINS
Success

Used these for my first run of grain spawn and they worked perfect.

Thrilled to hear it, Travis! Thanks for your review.

F
Faith
A little slapdash

Most of the six lids I received were difficult to screw on at first; I quickly realized it was because the inner silicone ring wasn’t properly aligned and needed to be pushed up to be flush with the top of the lid. After that, it was much easier to work with. Would rather have that easy to solve issue than to have to drill holes in my own lids and attach silicone rings.

Thank you for letting us know, Faith! We appreciate your review and will share the feedback with our team.

C
Connor
Great lids.

Stainless steel is the way to go.

So glad they're working out for you, Connor! Thanks for the great review.

M
Mitch
11/10

No more rust, no more stir bars sticking, easy cleanup and no manual labor. I used to make my own lids, I thought it saved me money. These are the highest quality lids I have found and I won’t go back. I highly recommend using these over plastic lids or making your own lids with standard mason jar lids. You will not be disappointed.

So great to hear you are having success using our products, Mitch! Keep it up!

D
Dakota

Outstanding

G
Grant Clapp
Stainless jar lid

Great product, stainless is the only way to go

Thanks for sharing, Grant! We appreciate you taking the time to share your experience.

C
Corey Lyons
Great Lids

Great quality culture jar lids, have become a mainstay of my grown room!

Thanks for the great review, Corey! If you need help with anything, please reach out.