Illedeplh

From MarijuanaWiki

Illadelph is a Philadelphia based glass blowing company. They Blow tubes made from pyrex glass and have "scientific" glass-on-glass conections at the joints. They come in many varieties including single chamber, double chamber, Cobalt Blue glass, glycerine cooled condensers, and you can also find their logo on the regular clear ones in multiple colors including the latest and most popular, the rasta colored.

Beyond just Tubes Illadelph also makes uniquely shapped bubblers.