Every bag has a batch number.
Before a bag goes out to you, we have measured its mix, sterilised it in the autoclave and given it a batch number. So for every bag we know when and how it was made.
From mixing to shipping
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Mix and measure
Moisture in % · pH valueEvery mix of grain or wood substrate is made as its own batch. Before it goes into the bags, we measure its moisture in percent and its pH value. If a batch is off, we correct it. That way you always get the same quality.
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Sterilise in the autoclave
150–210 minutes at 15 psiThen the bags go into the autoclave: 150 to 210 minutes at 15 psi overpressure (about 121 °C), depending on whether it's grain or hardwood. Steam and pressure kill the germs that would otherwise compete with your mycelium for the substrate.
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Assign a batch number
Every bag traceableEvery batch gets a number. With it, each bag can be traced back: when it was mixed and autoclaved, at what moisture and what pH value.
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Ship fresh
No old stockThe batch date tells us how old a bag is. So you get fresh bags, not ones that have sat around for weeks and lost moisture.
Questions about your bag?
Write to us, ideally with a photo; we usually reply on the same working day. And if an All-in-One does arrive non-sterile, our sterility promise applies.