The Peterson Dublin Filter is a fairly new and very welcomed range to fill the gaping hole in the 9mm Filter market. 9mm Filter pipes are becoming increasingly popular but few manufacturers have caught onto this or are unwilling to change. While Peterson are producing stunning pipes like this Dublin Filter and Fermoy the other manufacturers are missing out.
Peterson Filter pipes are strictly speaking not system pipes but by adding space for a 9mm filter if you were to smoke the pipe without a filter there is a large chamber which is effectively a moisture trap. The bore hole does not have the same exaggerated graduation but it is still there to a degree meaning it will smoke better than the average non system pipe. So smoked with or without the absorbent 9mm filter in place there are very few pipes that will smoke cooler or sweeter.