Fig. 6
From: A novel method to characterize silica bodies in grasses
Illustration of sample preparation using dry ash method. a Dry ashing was performed by heating leaf-blade samples on a Corning Hot Plate at >608.2 °F/320 °C. b Unburned leaf tissues were placed between two microslides. c Incompletely burned tissue demonstrated brown to black color. d Completely dry ashed tissue showed gray to white color