Incoming Natural Corks - Average TCA Score

CQC Audit Results - September 2018

Current Results from Screening of Incoming  Cork Shipments Show an 96% Reduction in Detectable TCA.

Analysis of natural cork shipments continue to demonstrate a steady reduction in occurrence of the chemical compound associated with taint. Since the adoption of its chemical testing method, the California based Cork Quality Council has screened every shipment of natural corks its members have brought to their warehouses. Before CQC members accept any cork lot into inventory, screening samples are sent to ETS Laboratories for GC/MS analysis of 2,4,6-Trichloroanisle (TCA).

Historic results show major reductions in TCA

Last year, CQC members conducted over 30,000 analyses. Their combined screening records show a steady reduction in measurable TCA levels that are now 96% lower than the results seen when records were first tabulated in 2001.