Patinas for Metal Artists
Barometric Pressure and Humidity
Photo Processes and Formulas
Science Experiments
Laboratory Procedures
Biodiesel Processing
Our cobalt blue borosilicate glass stir rod has flame or fire polished ends. Each hand crafted rod is approx. 20 inches long and 0.275 inches diameter, or 254mm x 7mm. It will withstand temperatures up to 1050°F.