Pyrology Glass is produced in Philadelphia, Pennsylvania and they manufacture unique and heavy duty Scientific glass bongs and dab rigs. Their glass work is a progressive blend of art and science and features pieces made with Glycerin coils, Showerhead percs and many feature one of a kind, sculpted artwork. Shop our selection of quality, American Made Dab Rigs, Apparel and Wax Bongs from Pyrology Glass at Aqua Lab Technologies today.