These are the classic “ultra-safe” zipper filter growing bags. They have been developed by European industry leaders Sac02 and Mycelia and have the highest contamination resistance rating of all available growing bags.

This type of filter works in a similar way to a HEPA filter. They are composed of hydrophobic, randomly arranged fibres which trap microorganisms due to the design of the filter, the air must pass through a long filtration distance making it the most effective filter available.

For quality and reliability there are no mushroom bags on the market better than the Microsac range. These growing/fruiting mushroom bags ensure the highest level of gas exchange as well as protection from other microbes and mycelial damage. The unique zipper filter design ensures the most efficient filtration possible.

Unlike all other mushroom grow bags, the addition of a microperforated plastic film between the filter and the substrate ensures that there are no dry out zones, resulting in far greater yield.

Aside from the significant biological advantages this range of mushroom growing bags are extremely tough and resilient, being made from a thick polypropylene material. They are the perfect candidate for both hobbyist and commercial production.

• Autoclavable: the bags are guaranteed to endure temperatures up to 123° C or 253° F, making them autoclave proof.
• No dry-out zones: contact between filter and substrate is limited, minimizing substrate dehydration under the filter zone.
• Flexibility: the length of the bags and the distribution of the filters are adapted to the application and desired gas exchange rate.
• Physical strength: Microsacs are subjected to rigorous tests to ensure that the bags remain strong after heat treatment and physical handling.
• Development: Microsacs are constantly tested and improved in cooperation with our sister company Mycelia, ensuring that our products meet large production demand and automation standards.

Delivery

Note: Please refer to the specific lead times shown on product pages for more accurate delivery times.

1. Small Orders (E.g. 100ml Spawn, Plugs): Sent via Royal Mail large letters.
2. Medium-Sized Orders (under 2kg): Royal Mail 24-48 hour tracked parcel.
3. Large Orders (2kg+): via DPD Express.

Returns

1. Standard Returns: Returns and exchanges within 14 days of receipt. The item must be unused and in its original packaging. See our returns policy here.

This does not apply to our Gift E-Cards, which are delivered via email.