You can feel confident placing your food directly on a FibraMent stone. FibraMent is certified by the NSF, a global, independent product testing and certification organization located in the United States. The NSF mark is your assurance that FibraMent baking stones comply with all established standards and guidelines for safe contact with food. FibraMent is the only commercially available stone that has this certification.
FIBRAMENT PHYSICAL PROPERTIES:
Heat Transfer Rate: 4.63 Btu.in/hr.sq ft.°F tested to ASTM Standard C177-95
Thermal Conductivity, K: 6.52 BTU In./hr. sq ft./°F per ASTM C177
Heat Capacity: 1.01
Temperature Limit, Continuous Use: 1000°F