The Dolium one-way keg body is composed of Invista® PET Polyshield® blended with 5% of MXD6 Polyamide.

The polyshield component contains the oxygen (O2) active barrier, keeping the oxygen away from the product, whilst the MXD6 Polyamide is responsible for blocking the CO2 from leaving the keg.

The average loss of CO2 is 0.05gr/30L/month. For the oxygen content present in the keg over time please refer the graph below:

• Yes. Our customers receive CO2 or N pre-flushed and CO2 or N pressurized kegs.

  Dolium® guarantees a CO2 or N concentration above 90%.

  Therefore a final CO2 or N flush is required on the filling line prior to filling equal to practice with stainless steel kegs.

The monolayer keg wall is blended with a specific amber colour which is protecting beer in the frequency range of 300-450 nm which is the UV sensitive range for hops resulting in light struck off-flavours.