Northstar Borosilicate glass colors are saturated to prevent "Boiling" and the tendency to dull in a reducing flame. The colors are vibrant and rich. They stand up to more heat and a variety of flame settings.

Northstar colors can be worked uncased and easily pulled into stringers. Without fear of boiling and with minimal patience, these colors can be worked on the surface without being re-mixed.

SPECIFICATIONS
C.O.E.: 33 +/- 2
Compatible with Pyrex™, Kimax™ & Duran™ Glass
Rod Length: 15 - 18"
Diameter: 5 - 9mm
Annealing Temp: Max. 1112°F (600°C)
Suggested Annealing Temp: 1050°F (565°C)

Each of the images below show how the rods appear after torchworking, and how they appear when encased in clear glass.