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Sterilised Substrate
Sterilised substrate is a nutrient base that has been sterilised under controlled lab conditions and sealed, so it stays sterile until it is opened. Mondo supplies it in two sizes, Large 1200 cc and Extra Large 2100 cc, each with a grow bag and sealing sticker. It is a perishable product: keep it closed in the fridge and use it within two weeks. You will find it in our genetics section, next to spores and liquid cultures.
What sterilised substrate is
In mycology, the substrate is the material mycelium lives on and feeds from. Sterilised means it has been treated under controlled lab conditions so that nothing living is left in it, and sealed so it stays that way until the moment it is opened. The value of a sterile base is that it is clean and consistent when it arrives. The substrate itself contains no spores and no mycelium.
Large or Extra Large
| Size | Volume | Included | Storage |
|---|---|---|---|
| Large | 1200 cc | Grow bag, sealing sticker | Closed in the fridge, use within two weeks |
| Extra Large | 2100 cc | Grow bag, sealing sticker | Closed in the fridge, use within two weeks |
The two sizes differ in volume only. Preparation, packaging and storage are the same, so the choice comes down to how much material your project needs.
Storage and shelf life
Sterilised substrate is not something to keep in the cupboard. Put it in the fridge, closed, as soon as it arrives and use it within two weeks. Leave the seal intact until you need it: once opened, it is no longer sterile. Because of that short window, it makes sense to order substrate shortly before you plan to use it rather than stocking up. Orders leave on working days within 24 hours in discreet packaging; see the shipping overview for the options in your country.
Why it sits under Genetics
Substrate is listed under Genetics because it is handled like the lab products there: prepared sterile, sealed and kept cool. It contains no genetics itself.
Frequently asked questions
What is sterilised substrate?
Sterilised substrate is a nutrient base that has been sterilised under controlled lab conditions and sealed so it stays sterile until opened. It contains no spores or mycelium of its own.
How long does sterilised substrate keep?
Keep sterilised substrate closed in the fridge and use it within two weeks. It is a perishable product, so order it shortly before you need it.
Can I store sterilised substrate at room temperature?
No, it belongs in the fridge. Keep it closed and refrigerated from the day it arrives, and use it within two weeks.
Which sizes of sterilised substrate are available?
Mondo sterilised substrate comes in Large 1200 cc and Extra Large 2100 cc. Both sizes include a grow bag and a sealing sticker.
Does sterilised substrate contain spores or mycelium?
No. Sterilised substrate is a sterile base without any genetics. Spores and liquid cultures are separate products in the Genetics section.
