PF Tek Substrate Jars
Usually ships within 3 Business Days – We make all PF Tek Jars to order to offer our clients the freshest product possible!
Orders of 24+ May take longer than 3 Business Days to ship but we will do everything possible to fall within 3 business days.
PF Tek Substrate Jars also known as BRF Tek or Brown Rice Flour Jars have been a staple in the mushroom growers pantry for around 2 decades now. We use Ball canning jars. Each one of our jars has two pre-drilled holes in the lid and a top dry layer of vermiculite to add a dry filter between the lid and the substrate to help fight against contaminates. All independent test samples reported to have shown to start colonizing between 4-7 days after injection with spore syringe at incubation temperatures of 78°F – 80°F. All jars are topped off with aluminum foil to help stop contaminants from getting into the 2 inoculation holes in the lid.
Want Bigger & Faster Yields?
For higher yields check out our PF MycoTEK™ jars that incorporates our MycoMash™ Mushroom Bulking Additive. The first 100% natural mushroom bulking additive on the market. When MycoMash™ added to your PF Tek or Grain Spawn Jar or Bag recipe it can increase yields in PF Tek Jars by 50-75% and increase colonization in your grain spawn by up to 3 weeks!
Be sure to colonize following all sterilization methods when inoculating these jars. Remember, these jars are the perfect environment for fungal spores, mold spores, to colonize. Green house mold is most prevalent and 1 Billion mold spores can fit on the tip of a pen. So, when you think you’re safe, you’re not. Each pack of PF Tek Substrate Jars will come with instructions outlining multiple methods to inoculate and safety tips for sterilization. If you follow our step by step process, you will have 100% success. If you miss 1 step, we cannot guarantee success. Remember, these should be done in lab quality standards for cleanliness. Don’t be surprised if you fail your first time. This is the growing pangs of learning to grow your own mushrooms. It’s 100% going to happen, so get over it now. You might have 1 good jar, you might have 8, but at some point you will get contamination! I’ve been growing mushrooms for years now and still get contamination sometimes.
Shelf Life: 6-8 weeks from date of shipment MAX
Fridge Life: 8-12 Weeks Max
For maximum efficiency and freshness we recommend colonizing the jars within 2 weeks of delivery!
- Options: 6 or 12 Pack – 8oz PF Tek Jars
- Yield Expectancy: 1/2oz min of Dry Mushrooms per jar over its lifetime
- – This is going to be strain dependent but good average overall.
- – Lifetime is usually 2-4 flushes over the course of 2-6weeks of fruiting
- Great for beginner and veteran growers.
- Instructions for Inoculation Included.
- Natural Organic Brown Rice Flour.
- Finely chopped Horticultural Vermiculite.
- Reverse Osmosis Water.
- 4-7 day inoculation period reported by independent samplers.
- Pressure Sterilized 90 min. @15-17.5 psi.
- Incubation period @ 78°F-80°F from 3-6 weeks.
Albert Engberg (verified owner) –
No problems at all
Kyle (verified owner) –
A little messy from loose tin foil its all good tho inoculated all 12 about a week ago all are good no mold thanks guys
Kevin (verified owner) –
Everything was great! Fast shipping and a good price.
Anonymous (verified owner) –
Excellent product. It works like supposed. Mycelium grow and spread in about a week. Thank s