Disposable Sterile Plastic Petri Dishes

Sterile plastic petri dishes, 90x15mm for culturing bacteria or germinating seeds.

Combo packs with magnifiers, droppers, filter paper & more.


Petri dishes can culture molds or bacteria or act as a small enclosed environment for insects and plant seedlings or even as a display case. These petri dishes are made from clear polystyrene and are sterilized.

We do not supply agar but baking supply stores often sell it in bulk. You can prepare basic culture media as follows:
  • 0.5% powdered milk or whey protein concentrate
  • 0.3% beef extract (beef bouillon cubes)
  • 1.5% agar

% means weight by volume. So if you have 1 litre of water (1000g), add 5g of powdered milk, 3g of beef extract (or ~1/5 a bouillon cube) and 15g of agar. Mix & heat in a pressure cooker to sterilize, then pour into the petri dish, close the lid & let cool down.
Displaying 1 to 3 (of 3 products)
Polystyrene Petri Dish Sterile 10 Pack

Polystyrene Petri Dish Sterile 10 Pack

SKU: 22700-9
$3.95USD or lower Each


SKU: 22700-9MK1
$7.95USD or lower Each
Petri Dish Seed Germination Kit

Petri Dish Seed Germination Kit

SKU: 22700-SG
$16.95USD or lower Each
More Information

What are Petri Dishes Used For?

  • Culturing bacteria or mold
  • Germinating seeds
  • Displaying products
  • Move iron filings with magnets