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Comparison of the technics

Comparison of a standard press and Inertys This innovative, patented pressing process under inert gas with gas recycling ensures the total injection of inert gas and 100% of juice pressed without oxidation

This exclusive solution is cost saving (neutral gas and energy) and viable since it is the only system that guarantees the control of oxidation during pressing.



Traditional press
  Bucher Inertys press

- Crumbling phase: the vacuum flow and the pomace crumbling operation favour the contact between the oxygen in the air and grapes.


- Inert gas injection of the whole pressing operation with the Inertys patented process.

- The theoretical surface of contact  is generally considerably underestimated: 3700 m2 for 10 tons of grapes!


- The oxygen content during pressing is less than 2% in the tank.

- Injection of inert gas in an empty tank by the direct injection of gas cannot be precise and does not enable the  efficiency threshold of 2% of O2  to be reached.


- Inert gas injection is at the same flowrate as deflation of the membrane with the vacuum pump (a high flow rate and not dependent on numerous nitrogen generators). The pressing cycle is not prolonged.

- The inert gas injection with lost gas for a standard tank is a heavy investment in gas generators and bottles to ensure an acceptable flowrate.
Costly top-up inert gas injections ( at least 3 volumes of gas for one tank volume per pressing operation).


- A flexible container connected to the press stores the neutral gas: running costs are low. A 9m3 bottle of nitrogen is required to fill a flexible container of  80 hl at the start of the harvest.  The consumption of gas per pressing operation is estimated to be 10% of the volume of the flexible container, i.e.: a 9m3 gas bottle for 10 pressing operations.