Petri Dishes and Agar for Mycology: Build Your Home Lab.

Introduction

Petri dishes filled with agar are the heart of any mycology laboratory. They allow you to isolate pure strains, clone mushroom tissue, check for contamination and preserve genetics over time. While once exclusive to professional labs, they are now fully accessible to enthusiastic hobbyists thanks to kits like those from Fungaia.

A home mycology lab doesn't require expensive equipment — just quality Petri dishes and the right technique.

What Is Agar and How Is It Used in Mycology?

Agar is a polysaccharide derived from red algae, used as a gelling agent to create solid culture media. In mycology, agar is enriched with nutrients such as:

  • Dry Malt Extract (DME): a carbohydrate and sugar source easily metabolized by mycelium.
  • Yeast extract: provides amino acids, B vitamins and growth factors.
  • Dextrose: a fast-acting energy source for germination.

The most popular mixes are MYA (Malt Yeast Agar) and the simpler MEA (Malt Extract Agar). Fungaia offers ready-formulated MYA powder that simply needs to be dissolved in distilled water and poured into dishes.

"Fungaia's black carbon Petri dishes offer superior visual contrast: white mycelium stands out sharply against the dark background, making contamination immediately visible." — Fungaia Team

What Are Petri Dishes Used for in Mycology?

  • Tissue cloning: take a small fragment of fresh mushroom and transfer it to agar to obtain a pure strain.
  • Culture expansion: from one plate you can inoculate other media or liquid cultures.
  • Contamination testing: monitor for the growth of unwanted organisms.
  • Genetic selection: isolate mycelium sectors with superior characteristics such as fast growth or high yield.
  • Long-term storage: agar cultures can be stored in a refrigerator for months.
90 mmdish diameter
3–7 dayscolonization
10 unitsper kit
6+ monthsstorage

Culture media on Petri dishes: each plate is a universe of genetic possibilities.

How to Use Petri Dishes — Step by Step

  • Prepare a sterile environment: use a SAB (Still Air Box) or laminar flow hood to minimize contamination.
  • Sterilize your tools: flame-sterilize a scalpel or use the sterile applicators included in the Fungaia kit.
  • Transfer mycelium: take a fragment from liquid culture or fresh mushroom and place it at the center of the dish.
  • Seal with Parafilm: close hermetically to maintain internal humidity.
  • Incubate at 23–26°C: away from direct light. In 3–7 days mycelium will have colonized the dish.

The Fungaia Complete Agar Kit

For those who want to get started without measuring individual ingredients, the Fungaia Complete Agar Kit includes 10 black 90mm Petri dishes, sterile applicators and 100g of MYA powder. Everything you need to set up your first home mycology lab — in one box.

Build Your Home Lab

Pre-filled Petri dishes, complete agar kits and lab additives — professional quality for the serious mushroom enthusiast.

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