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Pre-Poured Agar Dishes & Slants

From: $30.00 From: $20.00

In stock

(3 customer reviews)

I offer convenient MADE TO ORDER solutions for home growers, in this case I help to remove the hassle from pouring petri dishes in a still air or glove box, or even for those who are too busy to make their own plates while running a mushroom farm.

I am happy to help with sterile petri dishes for culture work and slants for long term storage of mushroom cultures.

Upon receipt feel free to refrigerate, use when ready to get to work! Add antibiotics to the dishes/slants in the event you’re working with spores, tissue transfers (cloning mushrooms) or are otherwise concerned about bacterial contaminants. For slants, it can’t hurt to have an added layer of protection, but is not necessary!

NOTE: Don’t use antibiotics as a crutch for poor technique, it will bite you in the ass!


Expect up to 7 days before shipping.

Pre-Pours are NOT individualy wrapped, they arrive in 20 packs in sealed gallon zip-locks. If you would like pre-wrapped plates, send me an email for a vendor recommendation!

Some condensate can be expected when conditions outside (during shipping) are not comparable to inside (when you bring the box indoors). To remedy this, after sealing the plates, store them upside down and condensate will dissipate within 1-2 days.

If you’d like to mix your dishes & slants, keep them in increments of 20 & indicate in the ‘Shipping Notes’ on checkout!!

More Details Below!!

STOP! Monthly & Quarterly Agar Deliveries ARE AVAILABLE!

Yes you read that right! Additional savings on shipping, free parafilm with all orders and dollar plates/slants any time!


While simple at face value, pouring agar can be time consuming and if not done right, a complete waste of time. That’s where I come in! With years of experience starting from a still air box and working up to a 4×4 flow hood, I love spending time in the lab and doubly so when it feeds my family! I offer pre-poured agar at a significant savings to other retailers online, and I like to think my sensible approach helps to encourage others to try agar once they realize it’s not so scary!

P(otato) D(extrose) A(gar) (aka PDA) is the current formulation in production. Gentamicin sulfate is the active antibiotic, if chosen.

Storage life of pre-poured agar plates depends on how you store them, kept in the bag (or another sealed container) they arrive in & refrigerated they can last for some time. If sealed with parafilm and left out in the open, they will dry within a few months. Slants however are completely sealed, and need no special storage considerations other than post inoculation/colonization cold storage is recommended with the health of the culture in mind (other thank pink oysters!) this applies to stored petri dishes though they will still dry out in time if not kept sealed.

Want to learn how to pour your own? See my tools & resources section for links to bulk agar, and the article I wrote on pouring agar for mushrooms to learn how it’s done & learn about a unique agar recipe you probably haven’t heard of!

Do you do a LOT of culture work for mushrooms? Consider my pre-poured agar subscription service which offers monthly & quarterly (every 3 months) petri dish or slant deliveries. Always $1/ea (aside from antibiotic additives) for subscribers, you also receive discounted flat rate $10 shipping on any quantity ordered as well as complimentary parafilm (or alternative) for each dish.

Additional information


Slants, Plates


20, 40


With Antibiotics, Without Antibiotics


Not Needed, 20 Dishes Worth, 40 dishes worth

3 reviews for Pre-Poured Agar Dishes & Slants

  1. hartseth (verified owner)

    Great pre pours at a very solid price! Not worth me setting up and making my own for the small amount I need. Always great shipping and contact with Myc as well!

  2. Carlos Uribe (verified owner)

    High quality plates at an unbeatable price point.

    I’m a super busy guy and don’t have the time to make my own plates. I was buying from a larger vendor from a large marketplace, until I saw Myc was selling plates.

    Once my order came in, I knew I’d never stray. The price and quality have solidified me as a repeat buyer.

  3. Jack Greene (verified owner)

    10/10 the dishes arrived in good shape on time and were clean and the customer service was superb love to support this guy!!

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