Aether 2 is our reactive encasing glass, designed for superb work-ability in the flame. It is engineered to be resistant to boiling and free from excessive seed bubbles. Aether 2 has solved the production issues of original Aether and has an improved viscosity curve. It will react with silver glasses but does a better job of holding the luster under encasement. If you prefer a non-reactive clear, try Zephyr. What are seconds?
Our second quality rods are less than perfect and are sold at a 25% discount. They may be too large, too small, too short, chipped, twisted or have an inclusion. They have passed our compatibility and color tests, but not our pretty rod test.