PETG Erlenmeyer flask with ventilation cap - 0.2 µm PTFE, 125-1000 ml, sterile
Sterile PETG shake flasks with vent cap (0.2 µm PTFE membrane) - optimum gas exchange, gamma irradiated, USP Class VI, cGMP
The innoME PETG Erlenmeyer flask with vent cap combines the chemical resistance and transparency of PETG with an integrated 0.2 µm PTFE hydrophobic breathing membrane - Continuous gas exchange during shaking with simultaneous protection against contamination by microorganisms.
Made from USP Class VI PETG, gamma-irradiated (SAL 10-⁶), DNase-free, RNase-free, endotoxin-free. The sealing cap made of high-strength PP with PTFE membrane retains its aeration properties even after contact with liquid.
Ideal for Aerobic suspension cultures (CHO, HEK293, insect cells), microbial cultures and media preparation. Article numbers: C031125 to C031001.

Technical Specifications
Item numbers
C031125 / C031250 / C031500 / C031001
Volumes
125 ml, 250 ml, 500 ml, 1,000 ml
Workload
30 ml (125ml) / 60 ml (250ml) / 125 ml (500ml) / 500 ml (1000ml)
Height
115.8 mm (125ml) to 216.8 mm (1000ml)
Neck diameter
29.4 mm (125ml) / 39 mm (250-1000ml)
Base diameter
66 mm (125ml) to 127 mm (1000ml)
Material (piston)
PETG (polyethylene terephthalate glycol), USP Class VI
Sealing
Vent Cap - PP with 0.2 µm PTFE breathing membrane
Membrane
PTFE hydrophobic - 0.2 µm, gas permeable
Sterilisation
Gamma radiation, SAL 10⁻⁶
Certificates
DNase-free, RNase-free, pyrogen-free, endotoxin-free
Autoclavable
No (PETG material)
Packaging
24 pieces/carton (125ml) / 12 pieces/carton (250-1000ml)
Production
cGMP-compliant, no direct contact with personnel
Chicanery
No - Standard Erlenmeyer mould
Origin
German warehouse, no import fees
Applications
Ideal for aerobic shaking cultures with continuous gas exchange.
- CHO, HEK293 Suspension cultures
- Insect cell cultures (Sf9, Sf21, High Five)
- E. coli, B. subtilis microbial cultures
- Yeast cultures (S. cerevisiae, P. pastoris)
- Biopharmaceutical protein production
- Media preparation with ventilation
Seal Cap vs. Vent Cap
| Property | Seal Cap | Vent cap (0.2 µm) |
|---|---|---|
| Gas exchange | None (gas-tight) | Continuous |
| Aerobic cultures | Conditional | Optimal |
| Transport | Ideal (dense) | Conditional |
| O₂ supply | Gearing | Very good |
| Contamination protection | Very high | High (0.2 µm) |
| Item number | C030xxx | C031xxx |
Further Erlenmeyer flask variants
The complete innoME Erlenmeyer flask range - standard and chicane, PETG and PC, seal cap and vent cap: