Flexural Test Specimen - ISO 178 / ASTM D790

Carbon fiber filament arrives today and I wanted to see if this stuff is REALLY twice as stiff as ABS.
I am building a simple test stand to determine young's modulus of Proto Pasta's 15% short fiber pla. Will post results.
*Update*
I printed the carbon fiber ISO specimen at 200C on a clean glass bed at 60C. Adhesion was perfect and it did not warp at all. Contrast that with the regular PLA sample that lifted slightly on both ends. (After all the aspect ratio is quite high)
*Results*