Dr. Myc’s Laboratory Grade PLATEMATE HIGH-CONTRAST AGAR is the easiest way to start making your own agar and culture plates for mycology. Fortified with biochar and carbon sources, Platemate Agar has a natural black color for easy identification of white mycelium and provides the perfect amount of nutrition sources for strong, rapid growth. Each 100g bag makes approximately 80 agar plates – just measure and mix and you’re ready to start!