Cospak and international cork closure company DIAM are supplying premium quality technological cork solutions to the Australian wine industry.

The DIAM closure undergoes supercritical CO2 extraction of TCA from raw cork materials to less than the quantifiable level of detection (<0.5ng/L).

DIAM is void of another 150 contaminants often found in natural cork after undergoing the supercritical process.

DIAM for still wine comes in two degrees of controlled permeability - 40 and 400 times less permeable than your average high grade natural cork.

DIAM is available for still wine, sparkling wine and as a cork stopper.