Synthetic Sterile Filter Stickers – Hydrophobic, Breathable Membrane for Mushroom Cultivation

Healthier mycelium. Higher success rates.

Our synthetic sterile filter stickers replace foam discs, polyfill, and micropore tape with a reliable, lab-grade solution. The hydrophobic breathable membrane allows critical airflow (O₂ in, CO₂ out) while creating a permanent barrier against water, dust, and airborne contaminants.

Why cultivators choose these stickers:

• True hydrophobicity – Water beads up and rolls off; no clogging after misting or condensation.

• Sterile-ready – Withstands autoclaving / pressure cooking (up to 250°F / 121°C).

• Reusable – Holds adhesion through multiple grow cycles.

• No tear, no fuzz – Synthetic material won’t shred or absorb moisture like paper or cloth.

Available sizes:

• 50mm 

• 70mm

• 90mm

Each sticker features a strong, heat-resistant adhesive ring that bonds to polypropylene, glass, or mylar bag surfaces.

Quick Specs

• 🔬 Material – Synthetic non-woven + PTFE-like hydrophobic membrane

• 🌬️ Air flow – High MVTR (moisture vapor transmission rate)

• 💧 Liquid entry pressure – Resists water & surfactant penetration

• 🔥 Heat tolerance – Autoclavable / PC-safe (121°C, 15–20 psi)

• 📦 Packaging – Individually backed on liner sheet, sterile-compatible

Ideal Use Cases Section

Perfect for:

• Grain spawn jars & lids (drill + sticker method)

• Liquid culture (LC) lids – no syringe filter needed

• Mushroom filter patch replacement on grow bags

• DIY monotub gas exchange ports

• Lab-scale agar culture ventilation