In accordance with the agreement reached between St Austell Brewery Co Ltd and H M Customs & Excise in relation to non-drinkable sediment in cask-conditioned beer by reference to which duty has been paid is shown below:
| Normal Volume | Sediment | Duty Paid Volume | |
| Metal 18's | 81.83 Ltrs | 1.7 Ltrs | 80.13 Ltrs |
| Metal 9's | 40.91 Ltrs | 0.85 Ltrs | 40.07 Ltrs |
